> On the other side of the table, especially for a Phd, they often expect a bump in pay for their additional schooling so its tough for me to hire someone like that. > Too far along in their career can also be tough. Often this is due just to salary demands not fitting a junior role.

Does this mean that you don't even give these people an offer, or do they reject your offer citing low salary (or other reasons, but you suspect it's actually low salary)?

I'm asking because many examples in the article (WhatsApp founders, females, Hispanics) seem like they weren't given an offer in the first place, not that they rejected an offer because their current position was rationally a better option.