I disagree about the image quality at typical sizes - I find JPEG-XL is generally similar or better than AVIF at any reasonable compression ratios for web images. See this for example: https://tonisagrista.com/blog/2023/jpegxl-vs-avif/
AVIF only comes out as superior at extreme compression ratios at much lower bit rates than are typically used for web images, and the images generally look like smothered messes at those extreme ratios.
AVIF only comes out as superior at extreme compression ratios at much lower bit rates than are typically used for web images, and the images generally look like smothered messes at those extreme ratios.