Ouch.

I'm certainly glad to have more people contributing to the campus, but this is a rough entry. I'm wondering why there are so many duplicates. Maybe they mean to export their data elsewhere and are accidentally uploading it?

I see you've already fixed a lot, thanks! I'll try to take a look at some changesets this weekend to fix things and see if I can gently guide them to the wiki or some other beginner friendly intros like StreetComplete.
These edits are definitely low quality, but ideally they'll come to like and use OSM and contribute better edits in the future.