My boyfriend watches inappropriate YT videos

I've had a couples conversation with him over this past year. How it makes me uncomfortable. It feels disrespectful. I'm not insecure, but I would never intentionally clip on a video of a half naked man out of respect or follow a channel with such content. It seems wrong to me. My boyfriend is 36(M) and I'm 26(F). We've been together for 2 years.

When I say "Inappropriate" I mean video that are bikini try ons, "big butt" video, girls doing and dressing subjectively, and or videos of girls doing demeaning things: like offering sex for a cab ride...etc

And he'll also watch girls that are 18-22yr old as well. This makes my stomach curdle.

Is this acceptable behavior? It's a boundary for me but is it an unreasonable one? He tells me it's normal but to me that still doesn't make it okay??