This is a false dichotomy and huge oversimplification.
> Extremists are always wrong.
Another one. Who defines what's moderate and what's extreme? Completely rejecting slavering was called extreme, as universal suffrage was.
The current economical system is destroying the planet and hence completely unsustainable. We need radical changes to survive.
Exactly. It is more or less the oversimplification Americans thinking about socialism do.
You are taking my human sentences and try to work with them like code. This conversation makes no sense. There is even an obvious nitpick counter to your slavery example (are/have been) but you are not interested in what I originally said anyway.
Absolutely true, but the sad reality is that after a while with a comfortable living situation people tend to vote against their own self-interest. This then leads to dismantling of safety nets, which certainly doesn't help radicalisation.
There's probably some truth to that, but i don't think getting cozy is the only explanation. The "engineering of consent" is a thing, and in an era of mass corporate media owned by vicious psychopaths, proper information/journalism is hard to come by. Noam Chomsky has plenty to say on that topic, if you're interested