Can you actually point to a success story in changing an organization from the inside?
It's already happening within Facebook this gallant lad falling on his own sword was an important motivator I'm sure
https://www.theverge.com/interface/2020/6/3/21278233/mark-zu...
Yes, it almost certainly is helping.
Being willing to walk away is fundamental bargaining tool.
If some people quit over an issue, it strengthens the bargaining position of those who stay behind.
Both tactics are required.
And yes all our energies should be towards changing the organizations, as systems professionals, rather than competing on "look what I can do" while the world outside our gated communities crumbles.