There is nothing inherently “wrong” with adult traffic as long as it doesnt come from kiddie porn or anything like that.
The problem has always been EXTREMELY low conversions. I suspect when most people are feeling a little randy they arent interested in playing slots or blackjack.
Now, once the “matters at hand” have been taken care of, so to speak, they might not mind gambling, but again I think most have other things on their minds like a nap or a shower.