And what about old devices? I'm sure someone out there is still using an s5 as a daily driver... Future proofing is great and all, but 240p on modern devices looks like trash, even worse than tube tv.
They can keep using whatever they're currently using.
This doesn't take away anything. It's a new standard.
Based on your argument, one should add new safety standards to cars like seat belts, because old cars might not have them.
240p for someone’s webcam thumbnail in Microsoft teams is perfectly sufficient though.