I'm pretty sure something like phone banks (in or out-bound) are filled with low-skill workers whose credentials would be valuable to data thieves.

I've worked low wage jobs for the Government and Private Industry where we were hit with ransomware and phishing attacks. I think you are underestimating how many workers are really in that position. I'm not sure if you're American, but it's very common in America.

I'm a reasonably well paid software engineer in Silicon Valley, but I don't get a bonus or options of any kind. I suppose my employer to could take vacation days from me or not give me a raise next year, but if they did either of those things because I "failed" a phishing test (where "fail" doesn't even involve giving up any credentials) I would probably be looking for a new job anyway so they might as well fire me.