> I think that "everyone is interviewed in the same manner" thing can eventually evolve into better hiring process - because it will overtime produce data that can be learned from.

I agree also in theory, but as you said there are vast differences in speciality. Some programmers are far more product focused and have an eye for design and communication, and some only do well when they're deep in the weeds of some obscure perf optimization. The latter gets hired quicker, while the former can often do a lot of useful things for an organization.