What? Pretty much every general-purpose calculation on your computer that isn’t an integer is done with FP64. AI may not use it and games may prefer FP32 for many things, but your CPU certainly does a ton of FP64 work.
* Web rendering and almost all web apps (see the JS number type)
* Most things in a game not done on the GPU
* Audio processing
* Most GUI processing/rendering
* Every miscellaneous/scalar calculation these days
Believe it or not, on a CPU this adds up to a lot more than the work you get doing AI processing.
You have a point about games, but the CPU is seldom the limiting factor.
Very few people are handling raw audio. For the rest, codec hardware beats everything else by a massive margin.
Being good at floats matters, but even float-heavy code generally has way more integers than floats making integer performance king.