That's not whataboutism, that's valid criticism of a flaw in your idea.
>Should we therefore resign and stop trusting each other altogether?
This is a strawman, that was not suggested. What was suggested was to have an interview process which doesn't involve informal/subjective trust. The best programmers don't have huge twitter networks or github stars - some might, but not all. That's no criteria for filtering.
Is there racial or gender-based inequality? Yes, unfortunately there is.
Should we therefore resign and stop trusting each other altogether? No, we shouldn’t.
We should rather try and extend our trust to others.
Inequality isn’t caused by trust but by a lack of it.