This past weekend I met a retired mechanical engineer who was absolutely convinced that opening a single 2L bottle of soda releases more CO2 than a typical car releases in a year.
I have a good friend who is a registered dietician (and very smart) who, even though this information was already out of date when she learned it in college, is convinced that any form of low carb diet or intermittent fasting is absolutely, 100% guaranteed awful for everyone, and also doesn’t seem to make any distinction between different kinds of fatty acids.
In short: schooling of any kind isn’t actually that useful at getting most people to understand that the things they’re being taught are facts, about the actual world, which they can apply in real contexts, and they very rarely teach how to properly question the information you encounter.
Basically, schooling != education. You can go through a lot of schooling without becoming educated, and vice versa.