Being a lala in game and being a man in game are exactly the same thing, however, irrespective of whether or not you're a lala or a man in the real world. It's just a simple checkbox during character creation, available to everyone. Biology is literally irrelevant. That's why I don't think anyone is particularly offended by the idea of a FC which only allows male characters, any more than the all-lala or all-cosplayer or all-raider FCs genuinely offend anybody. Heck, my FC only recruits people I know in real life. That's a really elite subset of people which is impossible to break into casually!

The OP's casual sexism wasn't about any of that, though; they were saying things which were directly discriminatory against women (and several other groups) in the real world. That's a huge, huge difference and if that's how they conduct themselves when recruiting it's no wonder that they were punished. Nobody pays to play the game in order to endure other people telling them they're less eligible as gamers and human beings for characteristics that they happen to have in the real world. It's an abhorrent way to socialize in an online game.