I wonder if this is directly or indirectly related to what Elon Musk did at Twitter.
Most are trimming fat because of market conditions (economic slowdown) Twitter because they were management heavy and they were bought out and needed to trim some excess weight.
I'd blame this more on overblown headcount combined with the new built-in privacy features on both Apple and Android phones for hitting adtech revenue. But one could have seen that coming a year in advance, when these features were being prepared.
Oh, and for Meta specifically, this outsized bet on the "metaverse".