I think LW is skewed toward believing in MWI because they've all read Yudkowsky. It really doesn't seem likely Yudkowsky just gleaned MWI was already popular and wrote about it to pander to the tribe. In any case I don't really see why MWI would be a salient point for group identity.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.