Conventional wisdom in the US is that Maduro is a ruthless, violent dictator, who has suppressed opposition, smuggled drugs, funded terrorism, violated human rights, etc. But that doesn't get you kicked off Facebook. Facebook and Twitter happily provide platforms to violent, human rights abusing regimes. ...but recommend one snake oil cure for Covid-19, and suddenly the hammer drops, I guess? Interesting priorities.
Except if you're in a position to get them in trouble. Remember that Trump (mostly) got away with this while in office.