JPEG XL is significantly smaller? All the stuff I've seen has show a slight edge for the same visual quality, but not enough I'd suspect it'd offset hardware decode, although if software doesn't actually do hardware decode, then yeah, the argument falls apart.

I can 100% see JXL being adopted in production tools, where the motivations are different, I was mainly talking about the web adoption perspective for end users (which is the context of Google's supposed war on it, of course).