[tnzm]

>Imagine reddit where the goal was to earn upvotes. That would look a lot like spamming low effort memes. Maximum possible return for effort. If your upvotes are money, I think that's what you'll tend to get.

You basically described reddit as it is today.

On hypothetical crypto-reddit, on the other hand, spamming low-effort memes to farm hypothetical karma-coins would cause inflation; and if hypothetical crypto-reddit failed to combat spam, that would debase its currency in comparison with competing platforms, causing people to preferably post elsewhere.

Oh, and admins tampering with posts wouldn't be a thing, because they wouldn't own the only copy of the database.