Is it possible they did this on purpose to expand their team size?
Also, the large firing decisions in January 2023 and January 2024 were made up several steps up the ladder. There's been probably just as much firings done informally inbetween, and to your point, some were very purposeful: multiple people in Assistant org. reported independently that new directors and their couterie were grafted onto the org, they were shuffled onto "Still Very Important" Assistant teams, then the not-so-important Assistant teams were let go en masse.
They have 5 (or more) babies in 9 months, which is precisely the point of empire building: being able to handle more than one priority.
And then there's the antipoaching https://en.wikipedia.org/wiki/Antipoaching