Will it necessarily matter though?
In a WASM context format starts to matter less since content in arbitrary codecs can be downloaded and decoded.
There are some concerns:
Non-native support requires non-static pages - even for something that will always appear to be the same, things like noscript will kill the page;
Hardware acceleration will need to be done in general terms - something like WebGPU will help, but it will still be less efficient than hardware acceleration (and that could be a problem for mobile).
There are some concerns:
Non-native support requires non-static pages - even for something that will always appear to be the same, things like noscript will kill the page;
Hardware acceleration will need to be done in general terms - something like WebGPU will help, but it will still be less efficient than hardware acceleration (and that could be a problem for mobile).