Here's my two cents. I do agree that most RP is just lame.
However, you can't impose your way of roleplaying on others, or viceversa. And basically, this is the thing that bugs me the most about Disco. As you said, people are not open-minded. It's their way or the highway.
If you want better roleplay, shouting and Q_Q'ing might just not be the way to go. Rather, you need to set an example. But, meh, my original point was thay everyone can do whatever the hell makes him happy (within certain limits of course, like respect for others), so....