The case against JPEG XL

It's a compelling article, but in every comparison I've seen I've found JPEG-XL more faithful. How recent were these perceptual improvements? I may have to have another look at least to see if my feeling still holds.

The progressive decoding example seems very cherry-picked. I don’t think it’s fair to say that AVIF is superior to JXL in that respect. JXL shows a preview with fewer bytes than AVIF and refines the preview as more data arrives more gracefully than AVIF.

That being said, I think it would be fair to argue that AVIF is better suited for general web purposes. But JXL still deserves first class support in browsers and OSes. JXL is already being adopted in the photography world, and browsers should support viewing those images without requiring any conversion.