You think the average person writes performance optmized code?

If you are on that level then you know pretty well what you are targeting. And even then in 99% of cases you just look at the top level profile.

If you do performance analysis for some specific embeded project that is not using a standard profile, then its a bit more work, but hardly impossible.

Bruh, the "average person" won't buy a riscv-based computer in decades. The average bystander to the riscv project indeed writes high-performance code for their, so far, mostly non-existent or emulated riscv processors.