They already botfarm and karmawhore everywhere. This is just going to amplify that problem.

See quality original content.

Copy original content to a post of your own.

Report original post as SPAM, CSAM, or otherwise abuse.

Profit

Since now that there is a straight up monetary profit motive, would stealing someone else's original content actually make the thief open to a civil suit? Does that mean you could subpoena Reddit for the thief's contact info?

people will make quality content and totally not botfarm and karmawhore everywhere

You're assuming that botfarming and karma whoring isn't considered "quality".

I mean, look at this shining beacon of quality: "Reddit, what's the sexiest sex you've ever sexed? [Serious]"