@grue You don't need to identify yourself as a Linux user. The insulting remark at the top of your post and the tone of the rest of it makes it clear.
Ever been forced by your workplace to use a piece of software you'd prefer not to? For example, ever tried to share a webp image on MS Teams? You can't; you have to convert it first. Lots of household-name software rejects the format.
Hopefully the Firefox team needs to care about more than the needs of condescending Linux users.