There's many channels/groups where the validators coordinate and communicate for all kinds of chain related activities, tasks, upgrades, etc.

Actually, the Putin analogy is basically exactly what happens. Putin pushed the "red button" and everything else is a direct consequence.

That's not how it works with validator based PoS chains. Absolutely Kwon can "suggest" to do something, but has no omnipotent influence or control unlike your Putin analogy.

Validators are absolutely free to discuss, debate, and agree to whatever they think is best. Additionally, the validators in the active set with this power are put there mostly by the community of token holders.