local photolibraries has been doing them for a while

Yeah it's pretty neat, sort of feels like you are running your own personal surveillance program on your friends.

For me at least it's pretty counterproductive if the OS indexes all contents of all my files and includes them in a global search. That's just going to be a lot of noise and lead to worse search results. And it's a huge drain on computer resources and battery life. I don't like it on MacOS either. And that to me seems like one of the most conservative adoption scenarios.

also, linux is shit at using npu, how on earth are they integrating this stuff, on gpus?

Canonical could just fix that probably.