I afraid this is optimistic. Hardware support for VP9 is only available from AMD Polaris or Intel KabyLake. I think Apple started supporting VP9 only in 2020, likely excluding holder hardware. Youtube ships here VP9 and my Linux is able to accelerate it luckily on a T14. Not on my X220 ;)

Keep in mind implementing ASICs need a way more time and a way more till broad support has reached customers. Systems with Sandy Bridge or even earlier (like ThinkPad X201) are working fine and being used. Long working reliable hardware is a good thing.

Streaming (select best codec) can adapt quicker than video-chat (common codec). And so called "Smart TVs" will not receive updates at all?