I think Apple users have issues with Webm & Webp? But the issue here is using Apple products in the first place. Losing 90% of basic functionality is what you expect when using one of those.
The 1996 free breakfast cereal promotional game Chex Quest (which is actually a total conversion of Ultimate Doom with much of the original data intact).
All the memes I send to my friends on messenger basically come from Lemmy. I always have to download the image and use the phone image editor to crop it by one pixel. It then let's me save it, and it saves as jpg/png by default.
Skill issue, the only actual drawback is that some legacy systems whitelisted image extensions and haven't been updated. Even then just take a screenshot and upload that.