Malkmus appears on some of the Silver Jews stuff, but not much overall. It's David Berman who is the brains behind Silver Jews. Although if you don't like the bands you listed, you probably wouldn't like Silver Jews either.
By the way, Pavement is one of my favorite bands of all time.
And yes, some of the Royal Trux stuff is clearly meant to scare people away, for example the entire Twin Infinitives album.