

I’ve seen zero RISC devices in the wild
Ever seen an Nvidia GPU? They’ve been using them for years. One estimate is they shipped 1 billion cores in 2024.
Not as end user programmable chips of course, but the “end user devices” market is only a small part of the total industry.



Other way around, you can convert a “web safe” JPEG file into a JXL one (and back again), but you can’t turn any random JXL file into a JPEG file.
But yeah, something like Lemmy could recompress uploaded JPEG images as JXL on the server, serving them at JXL to updated clients, and converting back to JPEG as needed, saving server storage and bandwidth with no quality loss.