As someone from a rural background where the best case was usually HVAC repair and the not-too-uncommon case was addiction and stagnation, and who came into tech from far outside the normal path, this is the problem to fix, and tech company job requirements are way too late in the pipeline to exert much leverage there. This needs to be solved culturally, across years and generations.

That would be great, but if we can substantially reduce the impact of the difference in confidence by being honest about minimal job requirements right now, shouldn't we also do that?

This reverse-sexism/racism reads as if you believe on an ideological level that women and minorities have inferior character defects and need special accommodations.