I would be very careful. There needs to be just the right amount of punishment. The goal is to get on board those who voted for Trump yet do not support the storming of the Capitol.
No, the radicalization is on the internet. And talk radio, and the TV.
This is the kind of thing that we all would like to believe intuitively. But counterexamples are all too easy to find, unless you want to define "life is going well" narrowly enough that nobody qualifies.
Having a shit life is not a necessary or sufficient condition for radicalization. There is a correlation there, but I really doubt that it's the best predictor of who may fall victim to radicalization.