It's more than just not hiring remote workers. Some employers are actually surprised that one might not want to relocate to the bay.

s/surprised/angry/

People act like you're denigrating their entire way of life if you won't sell your house and move to the bay in return for their uninspiring below-market salary and the chance to "disrupt" something. They get especially upset when I say that the cost of living differential would need to be 50%+ of total comp, plus around $30k in moving expenses.

You can look at the weekly/monthly HN job posts to validate your comment, as quite a number aren't remote friendly.