This isn’t true anymore, Intel dropped AVX512 since they moved to Big+Small cores design while AMD actually implemented it with Zen 4.

The end result is that basically no one will be subject to this tax bracket.

It is high enough that everyone at that level will mainly get their real income from stock/loan which aren’t salaries.

Having this tax bracket or not having it is, basically the same for the super wealthy. The real method to tax them is through capital tax, not income.