So, the latest "drama" update: google seems to actually reconsidering it: https://www.phoronix.com/news/Chrome-JPEG-XL-Seconds (thanks Apple!)Mozilla/Firefox, please do what you should be doing - setting and using good standards!
One more vote for support for the format. It ticks all the boxes, has superb features and virtually the only thing holding it back is the SomeCompanyWithDubiousMotives... really, we shouldn't be hold back by google!