Archive link in case reddit admins attempt any funny business.
You can also use PowerDeleteSuite, as demonstrated by this person, to change all your comments and promote Lemmy.
Guide: How to edit all your Reddit comments with PowerDeleteSuite
There are reports of them restoring deleted comments now though. They do not appreciate the community. Reddit is dead to power users.
That’s why people should use it to edit their comments and saying, “I’m moving to Lemmy, fuck u/spez.”