I agree (e.g. think how many billions were thrown at string theory). Critical Thinking is an essential skill and must be included and encouraged from an early age.

Maybe many students are just trying trying to pass am exam or get a degree. There’s far too much to know about too many things to expect everyone to have even a basic understanding of everything. Knowing how to spot bullshit (aka critical thinking) is a lot easier than becoming an expert in every subject.