One of my favorite bands, twenty one pilots, is not really a Christian band. Tyler, the lead vocalist, sings mainly about mental disorders, such as depression. Although he has said that he is Christian, and let's ghat influence his music, he never actually sings about God or the Bible. In interviews, he's said that he doesn't want to go on stage and tell people what to believe, but only wants to be a friend to them, especially if they're going through rough times, but has no interest in trying to convert them. Does that make him less of a Christian. I know that the Bible does say that Jesus said specifically to go and make disciples. Again, does this make Tyler less of a Christian?
We are to "go and make disciples", but many of us can't reach people by 'preaching' or 'witnessing' to them. That never worked on my dad. What worked on my dad was watching others live their lives and beliefs each day. Tyler is doing what he feels convicted to do. Additionally, Tyler may be like me, I'd never put a "Christian" bumper sticker on my truck - I'd forget it was there, but others would NEVER forget it and I may act in a way that destroys a person's perception of Christianity - so now bumper sticker for me. Am I not 'making disciples'? Anyway, Tyler is in the public eye - maybe he is afraid that openly being Christian would hurt his record sales, or, maybe he just does not feel qualified and called to preach and teach. I'll leave that between him and God.