I used to think this. I used to watch a lot of media from youtube creators that were previously part of the atheism movement and gradually transitioned into right wing content. Once I started also consuming media from people on the left, I found that this was a caricature designed to prevent me from listening to people on the left that did have good points.

Yes there are extremists that like to shout, but they are in the minority or a person in riled up circumstances.