Yup. People are taught DRY very early on, as an introductory "engineering" practice above the nuts and bolts of writing code.

But nobody really teaches the distinction between two passages that happen to have an identical implementation vs two passages that represent an identical concept, so they start aggressively DRY'ing up the former even though the practice is only really suited for the latter subset of them.

As you note, when you blindly de-duplicate code that's only identical by happenstance (which is a lot), it's only a matter of time before the concepts making them distinct in the first place start applying pressure for differentiation again and you end up with that nasty spaghetti splatter.