Most people do this. The people who don't absolutely flood the zone with bullshit conspiracy theories and are used, willingly or otherwise, to fuel extremism and radicalise people online. They are the reason children are increasingly dying of measles and other treatable diseases.
They love to use the inherently flawed logic that conspiracies exist, therefore we should believe every made up load of shit they've heard on the internet. It is overwhelmingly anti science, anti truth, anti progress, hugely slanted against minorities and progressive people and always involves arselicking evil tyrants. They are among the shittest people who have ever existed on this planet.
So the advice IMHO should be, use discretion and caution, check the facts, be careful what you believe, but also take every conspiracy-frotting shitgibbon, bury them up to their necks in shit, and throw things at them while the grown ups discuss the facts properly.