AIO My bfs explore page on insta is worrying me.

my(f25) bf(m33) is asleep and I wanted to play spooky stories on his tablet to fall asleep to, then I found this on his instagram when I opened it, all of these girls look very underage doing very provocative dances, should I be concerned?? I want to confront him in the morning and I can’t even bring myself to, i don’t even know what to say, he doesn’t follow any one of them, but considering it’s in his explore, I’m concerned at what he’s looking at? Idk what to think, and how to ask, am I over reacting? I know he watches porn as do I, but this is different.