Bro is EXTREMELY salty that he has the option to skip the sex if he doesn't like it. He's extremely offended by all these snowflakes allowing people to not consume content they dislike. He's just incredibly frustrated by the idea other people aren't being subjected to sex they don't like. God forbid someone else, who he's not even watching fap, fap to what they prefer. Don't they know this is a free country?
Anyway
is this lesbian game only?
No, although it's very small regardless. You've got a big wolf guy who mounts you, and you could count the slime and tentacle as male since they're penetrative if you like. But there are only four enemies total, and then a couple different endings depending on your rank when you finish the game, which are lesbian.