Why are you thinking more about the people that piss you off than the ones that you consider hard working and caring?

You have a massive chip on your shoulder, dare I say that's why you've had many caring managers and now you're seeing them all as 'social climbers'.

Did one manager call you out on something and you torched the entire thing?

Are we reading the same comment? GP clearly separated the "caring managers" from the "LinkedIn corposlop ladder climbers", and even explicitly stated the issue with the latter is that they are usurping the former in moving up the ranks of the corporate hierarchy.

This isn't unique to GP either, it's not exactly uncommon nowadays for people to hate the corpo-techbro MBA LinkedIn archetype.