I understand the tech very well. For starters, they're not "miners," they're validators. Second, failure to achieve 100% consensus on the network state ends in a fork, not a failure.

And, given the acute concentration of validators (65%+ across 5 entities) what you're left with is not "decentralised" at all. The network state can very much be compromised through simple collusion between a handful of people behind closed doors.

Not to mention, nearly all of those validators are subject to US subpoena power, whether they are domiciled in the US or not. If you doubt that, go talk to the Tornado Cash dev that's sitting in jail right now.

This stuff isn't rocket surgery and confirmation bias is real. Might want to double check yours.