"I don't have a clue about topic A, but I don't trust the so-called experts with their so-called degrees and so-called years in the field, because they're evil tricksters!"
On topics where I don't have domain-specific knowledge, or don't care to have that knowledge, I subcontract my understanding to people with more training - I don't know how to fix my car, for example, I get someone to deal with that for me. I don't have a postgraduate degree in microbiology with immunology either - I subcontract my understanding of that topic.
And when I'm selecting my sources, I generally go with the 99% of qualified "people think A not B group", and not the "it's all lies made up by the lizard people to turn us into slaves when they invade!" people, the same way I trust mechanics more if they say "your car runs on petrol" than "your card runs on fairy farts".
If it were down to the antivaxers, shouting the arguments which have already been trotted out in this thread, then millions would still be dying a year from smallpox. Maybe that's desirable for you, but it isn't for me. I'd like to increase the number of fatal infectious diseases which are eradicated, not welcome previously almost-gone-in-the-UK ones back with open arms.