> If I used XSLT on my tiny, low-traffic blog, I think it's reasonable for browser devs to tell me to update my code.

I _do_ use XSLT on my tiny, low-traffic blog, and I _don't_ think that it's reasonable for browser devs to tell me to update my code.

Also, it's real easy to manufacture a situation where adoption of a thing is low when the implementation is incomplete and hasn't had significant updates for decades.