Where conspiracy theory means what, exactly? Did they define this term for the teens (or even just for the survey)? Why is 'disinformation' (itself undefined) conflated with the hilariously ambiguous 'conspiracy theory'?
It's really just a terribly weak article, and the source "study" doesn't look much better. It really looks like it is a study set forth to push a particular agenda with "numbers".
Too many people confuse data with science, and perhaps that is what schools should actually be teaching; probably when they teach statistics, which all students should take. Pseudo-science like "critical thinking" can't really be taught, but actual science can.