You're pretty much spot on, they are the_Donald of leftists. They think they're communists, but they're actually just a bunch of internet trolls who like to feel superior to others by creating some imaginary moral high ground which is somehow dependent on supporting Russia and China.
It's a bit frustrating because some of them are kinda funny, but they're way too far down the rabbit hole and it's a codependent community; they reinforce each other's delusions. Definitely don't mention it to them, you will absolutely get banned if you show any signs of questioning their narrative.
Btw most big servers like lemmy.world, sh.itjust.works, etc are defederated from them. Lemmy.myserv.one isn't though.
With regard to the situation with Guaido in Venezuela, isn't it true that the 2013 Venezuelan presidential election had a voter turnout of 79% and was extremely close? Whereas the 2018 election only had a voter turnout of 45% and Maduro was re-elected amidst widespread allegations of corruption and fraud. And for the upcoming 2024 election, multiple opposition candidates have been barred from running against Maduro.
And I understand that you're not supporting Maduro. But if the US is trying to support free and fair elections which Maduro is suppressing, than they are essentially doing the opposite of supporting a fascist coup. I unfortunately don't have time to unpack each of your scenarios.
You're not wrong in saying that the US has frequently intervened in Latin America for the past 200 years, right up until the present. But intervening to protect democracy is very different from intervening to support fascism, and failing to distinguish between the two is bordering on misinformation.
Think of it this way, if it weren't the US intervening, it'd be another foreign power. And the US primarily intervenes just to keep capitalism flowing, which is sometimes good and sometimes bad. Panama has done quite well as a result of the US intervening and building the Canal. And Latin America has largely avoided genocides and wars of the scale that we have seen in other developing countries in Asia and Africa.