This seems a bit different, given that Musk's leadership has a high potential to very radically change Twitter; he did just lay off half the company, for example.
Don't get me wrong, there are lots of negative factors to laying off staff and I'm not denying those.
But anyone who has worked in a large org, especially a public one, knows that there is excessive bloat. Many people at large orgs do nothing. They go to great lengths to ensure it looks like they're doing something, which I guess is something itself.
PS - I'm neither for nor against the layoffs at Twitter.
It turns out that in the big picture, there are fewer people who are truly critical than most people think.
Especially individual contributors. There are rare exceptions but those, who truly make a difference, stand out.