Chrome still hasn't changed its opinion about dropping JPEG XL support
This is starting to feel like the IE6 situation.1. Someone comes up with a cool feature.2. Browser developer refuses to incorporate it since "No 
one uses it!". Pushes developed in-house technology instead.3. No one uses the feature as a result. "See no one wants it!"4. Competitors start to implement the feature5. ???And no, pollyfill is again not the (right) solution.