Do you know of a way to screen out people who inflate their expertise on a resume or who fail to demonstrate competency in those areas during an interview, without actually interviewing them? Because if you do I'd love to hear it. But I thought that was the point of interviewing them. I don't expect recruiters and HR people who focus exclusively on hiring to have more than a shallow knowledge of what we're hiring for. I definitely don't encounter those more qualified to evaluate qualifications on LinkedIn, that's for sure. And LeetCode isn't nearly that good at eliminating crappy candidates. Plenty of people do it and then seem to lack those same skills when they show up.

That's why we have discussions like this: https://blog.codinghorror.com/why-cant-programmers-program/.

If validating their technical qualifications is not the point of the interview, are you really only interviewing candidates to see if people like their social skills? That sounds legally shady for most cases, and honestly for extreme cases where there's a valid concern that IS the kind of thing I'd expect to be filtered out by an introductory call with a manager or something.