Once a story is reported about big tech, it won't be reported again if the only change would be a different CEO. I've never seen a story about something as large as Twitter where contacts haven't later confirmed the behavior wasn't replicated multiple places in the Valley.
Even if this was true and Twitter under Musk wasn't unusual for Silicon Valley tech firms, Silicon Valley tech firms are not typical of employers generaly, nor does working for one represent a minimum standard of what it takes to “get enough of a nest egg to give a child what it needs to thrive”.