The main problem with your argument is the people want JPEG-XL. The main reason it is not in is purely due to Jim Bankoski's limited judgement, intelligence, and foresight.
https://groups.google.com/a/chromium.org/g/blink-dev/c/WjCKc...
https://groups.google.com/a/chromium.org/g/blink-dev/c/WjCKc...
XHTML 2 is waiting on that one... Oh well...
Everyone else... is fine with JPEG. And occasionally shares HEIC pictures from their iPhones.