I don't think you could rely on people having read a bit about the matter.

The reasons we do or don't believe something aren't so simple.

Behind my belief that quantum physics is a respectable field is not some specific evidence I have that its descriptions of the world are actually true.

My belief in it is derived from of a complex 'web of trust' - I place a certain amount of trust in the channels from which I hear that there is evidence for it, because I trust the social and scientific means by which that evidence is gathered, disseminated and evaluated. And so on.

Also because quantum mechanics is the result of a mechanism -- "scientific method" -- that I trust to generally provide reasonable results.