why are americans on sw so angry and rude?

The things about Americans is that there's a lot of them. With greater numbers comes a greater number of rude people. Rude people also tend to be louder and more noticable than nice people.

I've met a lot of decent Americans on here who are as good as folk from any other place.

because we are polarized and angry and our hate and discontent sadly slops over on everyone

I apologize.

Using bad language is one thing, expressing obnoxious ideas is another, and the latter is not specific to Americans.

Block us all then

Seems like a pretty lazy broad stroke comment.

Hmm 🤔 seems like you are the rude one segregating people into groups

It's part of their DNA