In fact e2blade is just angry. Ok, maybe too angry, but if you look closely he's not pointing fingers, just expressing a feeling.
The point is: do you want to avoid troubles? Stay away from a beta or a release candidate operating system that's going to expire quite soon. XP can be problematic too, but it's quite stable, at the moment. Vista isn't, because Vista cannot be. When Microsoft says the product is not intended and not ready for a production environment, you've got to BELIEVE Microsoft. Enter at your own risk and don't lose your nerves, because you'll risk losing your nerves very, very often with Vista Beta2 or RC1. Ask for help, if you like, but remember that you're on own. True, help could be offered, maybe, who knows. But showing anger doesn't help to get it, for sure.