Am I wrong for defending my brother

My brother makes music and recently had a concert. We grew up very religious and my brother was the first one to break away from that which caused my parents to disown him. The genre he does is I think alternative. He did a concert before and there were some comments left under the video of the concert he posted to his YouTube channel about some people being upset because they didn't realize how inappropriate his music was and they will never let his kids listen to him again and some stupid comments about wanting a refund. At this concert, I actually went and he had the cover of one of his other albums. In that album he's naked with a guitar covering his junk and before he starts singing he says "Just FYI, this is the cover for one of my albums. If you decide to bring your children here, that's on you. Idk who takes one look at me and thinks 'Wow. He's a wholesome Christian singer for children'. Parents. This one is on you." Honestly most people laughed so hard and it went well. He posted it to his YouTube channel and some of my family saw and said he was being condescending to parents and Christians who don't want their kids consuming that. I said he wasn't. He was just saying if you bring your children to his concert that's on you. They start saying how my brother is trying to suck these kids in to his devil music and then blame the parents. I defended my brother with my chest. Now these specific family members are mad at me. I don't have kids, but I do think it's the parents responsibility to know what the kids are consuming and my brother has never given off kid friendly. He's literally naked in one of his albums covers.

Edit: Thx guys. I think I just needed the validation. I honestly have no idea what adult could listen to any of his music and think it's kid friendly. The lyrics are explicit, some are sexual and one of his albums is literally completely about suicide and his suicide attempt.