Not supporting WebP had some merit, considering there were other answers, but WebM basically doesn’t have any better alternatives. Even iPhones have the necessary hardware to decode VP8 and VP9. Why does Firefox support WebM if it’s so bad for the web? Why is Apple even part of the AV1 alliance without releasing software that supports it?
I don’t like Apple getting a free pass on positive intent because it’s not Google. Whether its codecs (which Apple holds both MPEG-4 and HEVC patents,) or WebGPU shaders (nobody else wanted WSL, but Apple forced it on us, apparently because of SPIR-V IP conflicts,) people seemingly make up excuses for why it’s OK that they lag on standards that nobody else seems to have an issue with. It’s beyond frustrating. It’s infuriating. As a web developer, it’s a bigger problem to me than anything Google Chrome does, and trust me, that’s saying a lot.