Sure, there are always outliers and you can correct me if I’m wrong, but that’s just the overall impression I have.
(I wasn’t sure if !asklemmy@lemmy.world or this community would fit better for this kind of question, but I assume it fits here.)
Your points about social bubbles and echo chambers are true, but experiencing the displeasure of having to routinely interact with rightwingers in person verifies that they have fully-fledged conviction in their “vile conspiracy hate fascist bullshit”. They can’t have a reasonable exchange of ideas because they bring nothing reasonable or empathetic to the table.