I know that, you know that, the majority know that.
But it doesn't stop a minority not believing that! :-D
Amongst the less orthodox friends I have, I've got a pretty intellegent engineering colleague with whom I chat with regularily and over the pandemic I've been kinda shocked at his beliefs regarding the source of covid and his denial of the numbers of people hospitalised with covid.
When asked for his evidence which contradicts what I believe to be scientific data, he sprouts a heap of theories, some of which could be close to the mark and others which are (to me) clearly rebuttable. When I ask him to explain his often contradictions, he jumps from one theory to the next, which I think you have pointed out previously as being a common trait with 'deniers'.
It's a very strange, I dunno, syndrome? I'm not a professional psychologist but I am quite empathetic and can see some sectors of society that have had years of being side-lined by every government going and appears to lead to an instinctive doubt that we are being told the truth.
As a sometimes wearing educator hat person, from kids through to doctorates, I strongly believe that 'levelling up' should start with equal opportunities and access to education, with critical thinking high up the agenda! But we really need to enstate a better method of inclusive government so that all people are represented and have their say.
We can see from this thread(s) that personal belief trumps scientific data, so I guess it's better to help people have the means to understand their beliefs objectively.
But damn, that's hard

We don't need to look any further than religion to see how problematic it is for the human race to figure the facts :-D
How much do we value teachers? It seems we have our societal reward system topsyturvy!