Yep. It's like any kink, it's okay so long as you realize it's a kink (and are safe, sane, and consensual when you exercise it), and why it's wrong in RL. . .But people who realize it's wrong don't go around saying "Yaoi isn't like RL!" Or at least they don't do it like that.

I did not read to your comment. . .I fled the stupid. But yes, that also. Yaoi is different than simple slash.