It also doesn't help that most people's experience with webp is force-recompressed versions of images that were originally jpeg. With relatively low quality settings.
I'm not sure people consciously make that association, but you know which association they absolutely do make? The one where google images started using webp at the same time as they were locking it down. At the time, ecosystem support was practically nonexistent, so it functioned as "soft DRM" and among people who know the term "webp" at all that's by far the #1 association.
