Its not just about bitrate, as avif has some issues: - slow power hungry encoding - slow decoding (though this has gotten better very quickly) - terrible los

Its not just about bitrate, as avif has some issues: - slow power hungry encoding - slow decoding (though this has gotten better very quickly) - terrible lossless performance - no lossless path from jpeg like jxl. - no support for "exotic" formats like > 12 bpc or many extra channels. Saying avif should be the only format is like saying everyone should depreciate png and just use jpeg. It doesn't cover all use cases, though frankly I am getting sick of slow pngs.