Too bad. No really, I believe you, people can be jerks. Now that S2 and demo servers are found in the same list, I have accidentaly joined demo hosts. Makes me slightly mad now just thinking about it..
As for your suggestion, removing vote ban, I don't care. It will not make immature players behave, nothing will.
Obviously you take LFS with some seriousness, and having a laugh and crashing are not enough for you. That's great, and I have a solution for you:
buy the game