With all the unemployed tech workers, would it just make sense to hire someone who knows their salt to do recruiting and interviews? Recruiters always seem to have a blast moving between random high-level companies and ghosting people over text, socials and the phone. If they lack both the social skills and the technical knowledge, I don't know what their value proposition is, but compared to chronic underemployment after actually learning Java, C, C++, they're clearly winning.
The problem is "knowing their salt to do recruiting" is very hard. In all places I've been, the kinds of interview we are talking about here (technical problems, etc...) are delegated to regular engineers. So those technical interviewers are likely great at reading and writing the code, but they many not be the best at spotting fake AI.
(The recruiters only come in for non-technical parts like resume filtering, general information and benefits. Sometimes there is non-technical "culture fit" interview, that is usually some sort of middle manager from the department doing the hiring)