None of the arguments you're making make sense because you've put tradeoffs to decentralization.

For example, why isn't Bitcoin's confirmation time a minute like Liquid's?

Because nodes need enough time to verify and propagate transactions and blocks. A one-minute block confirmation time would mean that only the high performing computers would be able to act as nodes, which is far from decentralized. Short confirmation times also lead to more stale blocks and a worse user experience.

The reason Liquid works and seems slightly decentralized right now is because there are so few users. Unlike Bitcoin's antifragile properties, Liquid is fragile. Eventually, it will become hyper-centralized, and as more Liquid users join, history will repeat itself, just as Gold became Fiat from the Nixon Shock.

To me, encouraging people to use Bitcoin properly and telling them not to use Liquid are the same thing.