Prior to 1940 there were how many journal citations about plate tectonics? How many about geosynclinal theory?
Theories are theories, and exposing children to the logical processes which allow them to compare and contrast the merits and drawbacks of various explanations for percieved phenomena should be a good thing.
After all the purpose of an education should be to teach you to think, not what to think.
From there, the theory will stand or fall on its own merits.
Certainly correct, if that were the only measure. However, as a matter of simple logic, the converse is surely true.
Namely, any "theory" that lacks any journal citations after a reasonable lenght of time can certainly be dismissed.