Quite common nowadays to read this type of comment from cowards behind a throwaway. I blame the general discourse in American society, flamed by populists out for a power grab punching down. It's just sad to watch from the outside.
This commenter certainly doesn’t appear to be a native English speaker, what makes you assume they are American?
Not assuming they're American, I'm blaming the discourse in American society which spills over to other societies in the age of information, if you know English it's impossible to not be affected by USA's bullshit on the internet.