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Woo hoo! JPEG XL image support is in the new Chrome v145: https://www.phoronix.com/news/Chrome-145-Released
I had to enable via a flag: chrome://flags/#enable-jxl-image-format
You can test support here: https://jpegxl.info/resources/jpeg-xl-test-page.html
I'm not one of those people who never met an image format he didn't like, but JPEG has some good advantages, including visually identical replacement for JPEGs at lower file size, HDR support, and really fast rendering. Adobe also used JXL behind the scenes in the PDF standard and in compressed DNG photos. Adobe's use in for these critical cases is a very strong endorsement.
