There’s a difference between whether or not a file format supports features and a software supporting the file format. A tractor can have loads of features and still not be the right fit for you if it does fit in your barn. Doesn’t mean the tractor doesn’t have those features. DDR5 can be better then DDR4 and yet not all motherboards support it. It is trivial to convert from webp to the file format you need for your unique situation. Its supported baseline by browsers and use on the web is its best case. I make websites that allow people to customize SOLIDWORKS CAD files. SOLIDWORKS doesn’t support webp: I still use it on the website wherever possible and if someone uploads in webp I just convert to jpg before inserting into SOLIDWORKS.

I weep for the web server that has to serve those size images. I can typically cut webserver bandwidth in half by converting all non svg images to webp. Have had one project where this cut the network fee by 80% and allowed us to downgrade the rented server space.

WebP has all the functionality of jpg, gif, and png with better compression ratios.