I'm not complaining about people not joining a 4v4 game, I've got plenty of friends to play 4v4s with. And I can fill a game up by asking in #main quite well, thank you.
You might also notice another post above where I said I was equally happy playing 4v4, 8v8, or 12v12.
Perhaps you could read my original post. It's not a complaint about a lack of small games, it's an observation that 12v12 instead of 8v8 games large cause long waiting times, which (a) discourage people from spring, and (b) mean less ability-segregated games, making it hard for new players to get started.
Also:
I don't remember once seeing a player kicked for wanting to play a bigger game. Johannes seems to agree, above.
I didn't say anything about Johannes agreeing with me on what was/wasn't rude.