Imagine that your reputation didn't matter, getting sued was out of the question, and there was no criminal liability: your job, backed by the government, is to be employed by as many tech firms for as long as you can, you'd probably work pretty hard on coming up with a reasonable but very good resume and work hard on how to interview well. Now, you're a professional interviewer and might conduct 10x-100x more interviews than your average dev, and have a network of people helping you optimize your cheating.
Given that background, I personally find it unsurprising that they're having success and AI tools are just making it that much easier