I don’t think it is fair to judge Einstein on his political knowledge errors - he never called himself a political expert nor did he foist his political opinions on others.
The problem with many academics is because they know so much in an arcane field they think they must know much and have wisdom in fields where they know little or nothing. Most medical doctors are that way that I have met. They are educated very well in medicine, very well, and many keep up through the years but can’t see past their nose in politics. But it works both ways. I studied economics and politics is a hobby, I know a lot about both, but not so much about medicine.
I’ll be glad to shut up about advising people on medicine if they will shut up about politics.