I recall Jimmy Wales fielding a question about the barriers to entry in Wikipedia editing and it didn't seem like he took issues of the currently entrenched editor culture seriously at all. The Wikipedia Adventure seems to reinforce that. There's an aim here to get would-be editors up to speed with the pervading philosophies, but that tells me that the status quo isn't going to change anytime soon.
I don't think it is a good idea for websites to trick the users to register.
This is specially bad for Wikipedia, the "the free encyclopedia that anyone can edit"™.
These "politics" complaints are really blown out of proportion. I've made well-sourced edits to dozens of articles, often anonymously, and never had a single edit reverted or questioned. Yes, it happens, especially on high profile or contentious pages, but by and large everyone gets along just fine.