Nobody cares if your SQL is written by nazis as long as nobody knows they're nazis. Nobody cares if your sales guys are alcoholics as long as they bring in busines and don't embarrass the company. By intentionally filtering on irreverent criteria (like the politics and drug habits of back-end devs) you're needlessly shrinking the talent pool.

The time the average hire spends with the company is short enough that having to fire the occasional qualified employee early over "culture fit" really isn't a big deal.