And you've just articulated perfectly why some people were/are apprehensive. Because we're not all scientists, and some people are open minded about the possibilities.
I am not even vaguely suggesting that anti-vax youtubers should be listened to by the way.
People who know least should be less open minded though, which is kind of the point, they're not qualified to be open minded on that topic. Scientists are the most open minded as they test, test, test and prove, prove, prove and then this also gets peer reviewed etc.
Trust the people who do know, and it will prevent self harm of those who don't know, as well as the harm of others.
Same as when you get people who clearly who don't understand stats, sharing stats and making poor conclusions, and then sharing the conclusions. They shouldn't even be making the conclusions in the first place, never mind sharing them, as all this does is cause a feedback loop of terrible understanding, for those who struggle to understand the most. Al whilst everyone else looks on thinking "WTF are this lot doing, why is this guy listening to Bev Turner over the head of the NHS?".
It's like thinks like R rate, confidence intervals, base rate fallacy, relative risk, compounding etc, pretty much every single anti-vax or covid denial post got at least one of those massively wrong, most ticked two or three.
Yet, when on social media (which is the main problem), and things get picked up they don't reply or they divert onto something else. Either they don't want to know the actual truth, or they actively are trying to promote people making choices which put them at greater risk, which is pathetic (and should be criminal).