Ah okay that makes more sense. I was never a big submitter, just commented a lot. Still, you make a good point. I have some highly updated comments in discussion threads (not a lot but still), and you're right that reddit could get residual value from those down the road. Best to scrub completely.

Is there a guide for how to do it thoroughly? I have THOUSANDS of comments, it would take days to do it manually.

You could use something like PowerDeleteSuite.
GitHub - j0be/PowerDeleteSuite: Power Delete Suite for Reddit

Power Delete Suite for Reddit. Contribute to j0be/PowerDeleteSuite development by creating an account on GitHub.

GitHub