Don’t take it out on the posters. US schools stopped teaching how the government works back sometime in the late ‘70s/early 80s. Civics became Social Studies, where students were later taught how to organize a protest and had to come up with an organized protest, complete with signs and slogans for part of their grade.
I became aware of it in 1980. Friends with younger children told me about the protest lessons in the early 2000s.
We rail at POTUS, but this has been going on for over 40 years.
If I were to guess, I'd say that those who post here and neither know nor understand how our government works are mostly much older than you are assuming them to be.
I don't "rail against POTUS"; I rail against the posters who imagine that they know what they're talking about,are old enough to know better than what their posts claim, and then go bats**t crazy when told the facts.