It's brutal on the hiring side too, FWIW. I'm getting lots of "cover letters" that are written to other orgs, e.g. Hugging Face.
Maybe they were sick, maybe they were pregnant, maybe they were looking after a dying relative, maybe they were backpacking across South America, maybe they were sitting at home watching every episode of Star Trek, what people do in their own time is a private matter.
I suspect that among the hundreds of discarded resumes for a particular role was a candidate who actually believes in the company, would have been fully engaged with the work, and made a serious positive impact on the company’s success.