I don't think being more professional/collegial and less dishonest in an interview leads to monocultures. Ideally it would just reflect well on the person for n

I don't think being more professional/collegial and less dishonest in an interview leads to monocultures. Ideally it would just reflect well on the person for not obviously trying to game the system. If that actually leads to someone being less likely to get a job someplace, well that's a place you wouldn't want to work at anyway.