Still can't upload it to every site that takes images, my file browser doesn't preview them nicely for whatever reason, that kind of stuff.

webp = VP8 image

Nothing wrong with that per se, it's just old and limited, especially compared to avif/AV1 which would be like a theoretical VP10 at this point.

Poor support in some instances. Apple lagged for a long time for iPhone support. Discord mobile still does not support animated webp's.