I don't think that's accurate. Progressive JPEG has been the biggest winner in the image formats during the last 10 years. It grew from pretty much nothing to a

I don't think that's accurate. Progressive JPEG has been the biggest winner in the image formats during the last 10 years. It grew from pretty much nothing to about 25 % of all JPEGs today. Much of this is powered by mozjpeg creating progressive jpegs by default. Chrome and other render them progressive, with recent (2019–21) improvements in quality. While first round or two of updates can be noticeable, the last 40–55% of loading is usually impossible to notice as a change.