We hear your burden and we share it with you, for what you are describing is exactly what Scripture warns us about in these last days. You are discerning rightly that the term Christian has been emptied of its biblical meaning and is now used as a cultural label rather than a statement of new life in Christ.
The Bible makes it clear that a Christian is not simply someone who is not Muslim or Buddhist, or someone who was baptized as an infant, or who attends a church building. A Christian is one who has been born anew through repentance and faith in Jesus Christ alone. Jesus said in John 3:3, Most certainly, I tell you, unless one is born anew, he cannot see Gods Kingdom. And in Acts 11:26 we are told the disciples were first called Christians in Antioch because their lives so clearly followed Christ that others identified them with Him. It was never a broad cultural term.
You are right to be grieved when celebrities or others claim to be Christian while saying there are many ways to God. That directly contradicts the words of our Lord. Jesus said in John 14:6, I am the way, the truth, and the life. No one comes to the Father, except through me. And Scripture declares in Acts 4:12, There is salvation in none other, for neither is there any other name under heaven, that is given among men, by which we must be saved. We also read in 1 Timothy 2:5, For there is one God, and one mediator between God and men, the man Christ Jesus. To say there are many ways is to call Jesus a liar, and we must lovingly but firmly rebuke that teaching, for it leads souls to destruction.
The same is true of those who claim the name of Christ while living in open, unrepentant sin and showing no fruit of repentance. The young woman you described who cursed and mocked a preacher while boasting of abortion yet insisting she is a Christian reveals a heart that is far from God. Jesus warned in Matthew 7:21, Not everyone who says to me, Lord, Lord, will enter into the Kingdom of Heaven; but he who does the will of my Father who is in heaven. And again in Matthew 15:8, These people draw near to me with their mouth, and honor me with their lips; but their heart is far from me. A true believer may still struggle with sin, but the pattern of a true Christian is repentance, humility, and transformation. Therefore if anyone is in Christ, he is a new creation. The old things have passed away. Behold, all things have become new. 2 Corinthians 5:17. The fruit of the Spirit will be evident in love, joy, peace, and self control, not in cursing and pride as described in Galatians 5:22. We also must say with compassion that abortion is the taking of innocent life, yet we know that even that sin can be forgiven through the blood of Jesus when there is genuine repentance, for God is merciful to all who turn to Him.
We also recognize the deception of thinking infant baptism or church membership alone makes one a Christian. Scripture teaches in Titus 3:5, not by works of righteousness, which we did ourselves, but according to his mercy, he saved us through the washing of regeneration and renewing by the Holy Spirit, and in Ephesians 2:8, for by grace you have been saved through faith, and that not of yourselves; it is the gift of God. No ritual saves us. Only personal faith in Jesus Christ, confessing Him as Lord and believing God raised Him from the dead as in Romans 10:9, brings salvation.
We encourage you to continue to test the spirits as in 1 John 4:1 and to speak the truth in love. We are called to have a form of godliness but deny its power as warned in 2 Timothy 3:5, and we must not be silent. With gentleness we can ask those who misuse the name Christian what they believe about Jesus, about sin, about repentance, and share the narrow way, for in Matthew 7:13 we are told narrow is the gate and restricted is the way that leads to life, and few are those who find it.
We join together with you now in prayer.
Father, we come before You in the name of Jesus Christ, Your only Son, and we thank You that You have opened our eyes to the truth. We pray for those who call themselves Christians yet do not know You, for the celebrities who mislead many, for the young woman who is deceived, and for all who have a form of religion but have never been born anew. Lord, have mercy and draw them to true repentance. Remove the veil from their eyes and let them see that Jesus is the only way, the only truth, and the only life. We pray for the street preachers and for all who faithfully proclaim Your Word, that You would give them boldness and love. And we pray for our dear one who shared this burden, that You would give continued discernment, courage, and compassion to share the gospel faithfully, remembering that it is only through Jesus that we have access to You and that there is no other name by which we must be saved. Create in us clean hearts and make us faithful followers who do the will of our Father in heaven. We ask all this in the mighty and saving name of Jesus Christ, our Lord and Savior, amen.
"Pray, then, after this manner... 
‘Our Father who is in heaven, Hallowed be Your name. Your Kingdom Come! Your Will be done, On Earth as it is in Heaven!”
"Give us our daily bread. Forgive our debts, as we forgive our debtors. Lead us not into temptation, but deliver us from evil. For it’s Your Kingdom, Power and Glory Forever, Amen,” Matt 6:9-13, c.f., Matt 6:33, "But seek first The Kingdom of God and His Righteousness, then all these other things shall be added to you," thank You in Jesus' Name.
