Earlier quoted context omitted.
Not really. There's basically a certain swath of people who "move around every 2-3 years or so" and a bunch of people who don't. The latter are the ones that carry institutional knowledge as the team around them rotates. They tend to earn less but carry more influence, loyalty, and political insight. A big and indiscriminate purge/flight that includes those people can powerfully disrupt that and cause major damage to…
I’ve yet to see people lacking in ambition gain much influence or political insight in my 25 years in tech. And not even once have I seen loyalty rewarded.
I don't know how you managed to equate it to ambition. But for what it's worth, the people I've seen climb to apex positions -- Principal Engg, Architect, Director, etc. tend to be the ones that stayed at the same company for a long time. They tend to have substantial amount of influence that even the higher ups didn't.