This couldn't be more true.A forum in this industry has 2 choices: Be full of idiots or assholes. If you don't have the assholes to chase away the idiots, the forum fills with idiots.
The balance is certainly a bit worse than it has been in recent years, but I maintain a certain asshole population is every bit as necessary as an immune system.
Although that isn't just true of this industry, it's true of all online forums. I assume it has something to do with the demeanor and attitudes of those with intellect.