Earlier quoted context omitted.
I've experienced something similar at Peloton where a C-level kept bringing former reports at Uber for key roles and started to push out the existing employees. It's business at the end of the day but I do think there's a graceful way of bringing people in from former companies.
Same thing at my company, only it was a former Microsoft employee who brought along all his buddies. They screwed up a bunch of stuff because they didn't understand our market or customers, and then all slowly got let go before having to contend with the full consequences of their bad decisions. We're now in a multi year recovery process.
You just have to look at the About us / Management/ Leadership page on the company web site and correlate a few names, current positions and positions in former companies, to get it.