A lot of levels.fyi salaries are skewed because people report their current equity comp value instead of the value at the time of their offer.
As a hiring manager, I definitely felt the shift. It was a complete opposite from my hiring experience pre-pandemic.
My point is that after tech stocks dropped, they probably weren't making that much money anymore. They were likely already making $100k less, or would have been if they were still employed there, because their equity is no longer as valuable.