[wakawaka28]

Just because a job listing demands specific requirements doesn't even remotely mean the applicants will be qualified. Anyone can generally apply to anything, especially in this industry which is so eager to say anyone can get in regardless of qualifications. I agree that one screener should be enough, but maybe it happens twice on occasion because the authorized person is on vacation and they don't want to leave you hanging or something.

>And every one of those claims can be verified by manual online searches or automated tools.

No it can't. There is no central registry of every graduate in the world, and even if there was it would be expensive to have a subscription. If it was cheap to do background checks on everyone, it would be done up front instead of after they decide to hire you.