It's funny because I thought "you can't just copy and paste SO, there's a number of things to think of to be able to do it correctly". Guess I'm not the only one who thought that.

Anyway, most intellectual work is just applying known recipes (copy-paste, renaming a few variables), so it's just a matter of granularity and sources. The hate for SO copy-pasters owes a lot to the few beginners who don't understand that yet and take copy-paste literally.