If it's a joke "Ahah", if not it's just depressing. SO is a valuable resource to confront and understand concepts. Let's not encourage this copy/paste culture
If we encourage the DRY paradigm in the whole development cycle, copy/pasting a function is just a further reach of such paradigm. Now, if a programmer decides whether or not study and understand the pasted code has nothing to do with the quality of the final product.
Furthermore, IDEs by design encourage copy/pasting to speed development, most offer functionality to store code snippets. In that sense SO is like a web extension of IDEs.