If things are broken for some users they have lots of alternatives to switch to.
In #gnome47 we'll limit things to H264 on (semi-recent) Intel and AMD (those using VA-API). In the future we'll hopefully be able to extend things to AV1, maybe VP9, and more platforms. Depending on how things develop that'll be V4L2 or Vulkan.
@rmader if going for semi recent hardware then why not go for h265 or would that be too incompatible