Comment by F3nd0

Again, when exactly has Google endorsed JPEG XL? When did they promise to ship it in Chrome stable? Sure, they had it in development as an experimental feature at first, but so did Firefox.

The way I read it, both companies were tentatively interested until Google said they changed their mind, and shortly after Mozilla decided they didn’t really care. Correlation doesn’t imply causality, but their positions followed a somewhat similar trajectory at the very least. (In contrast with, say, Apple.)

I just don’t see where you keep getting the idea that Google was at some point far more supportive of JPEG XL adoption than Mozilla was.