Venezuelans who come to the US tend to be wealthier, in order to be able to get here, and have enough issues with their country in order to leave, issues that they will usually blame on the leadership.
None of this is to say Maduro has majority support, he doesn’t by most accounts, or that they don’t represent a sizable chunk of Venezuelans who don’t like Maduro, but that his support isn’t as non-existent over there as it is here.
It’d be like if Trump took over the US and you only got your views on what Americans think from expat communities in Canada. They would probably cheer his death, even if it was by a foreign empire, but that wouldn’t be representative of average Americans who probably wouldn’t like the foreign intervention, even if they don’t like Trump.
It doesn’t matter what style of Marxist ideology is attempted, they will all lead down to the same path of authoritarianism, mismanagement, and corruption. The ideologies and underlying framework are fundamentally flawed.
That being said, I don’t appreciate the false dichotomy. There’s clearly more, and way better options than a corrupt tyrannical leftist state or a corrupt tyrannical right wing state put in by the US. There’s no reason anyone should support either because they’re lesser of evils when there are paths to pick something that’s not evil at all.