Do they act on their beliefs or merely parrot them?

I ask because I've known people who were shocked at what took place 2021-01-06 but who proudly voted to re-elect Trump.

Today isn't much different: talk to a conservative voter who complains about the tariffs, Iran war, etc. and ask them whether it would be enough for them to vote Democrat, and the answer is near universally no. Lots of people have performative outrage because they're supposed to be outraged at what's going on, but the truth is that there's no line the Republican party can cross which would make them switch votes. Exceptions to this rule are still few and far between as far as I can gather.