Actually, if you look at his latest posts, and follow what he is doing - he's not actually doing so much direct development now, as much as he's coordinating other developers. This is a fairly different task list. He also provides support for other users in his household, so he has exposure to different use cases.
Basically - Linus has a proven track record when it comes to software. That means it's worth listening to him. Personally, I dislike the entire "desktop environment" thing, to start with - it's become very hard to use a different window manager, and older window managers get dropped not because they don't work - but because they can't work within the newer "environments" that take over parts of what they used to do - but not everything.
Why, yes, I'm kinda bitter about running e16 on Natty Narwhale, and I probably will be running it for a while yet, as it's very nicely light on memory use and CPU time.