I’ve always been curious about this even though I’ve never been in this situation.
On Reddit, there are things they ban you over if you do them with alternate accounts, like voting for the same option on a poll, adding multiple upvotes to a comment, and so on.
Meanwhile, as being a mod comes with duties, Reddit specifically asks you to approve or unapprove posts in your subreddit. For the most part, approving a post doesn’t seem on par with rigging results, but I’m guessing that because posts being approved gives automod the impression that an account is trustworthy, it could be deemed as amounting to an indirect form of rigging.
And yet, on the other hand, it is technically your subreddit, and even your own posts (as subreddit owner) make you choose between approving and unapproving posts.
What happens then if you have an alternate account, use it to post in a subreddit your main account owns, then approve it with your own account which owns the subreddit?
If you have your mod account to only approve posts or moderate the sub then likely nothing as it you can say your intent is to seperate your accounts using the principles of least privilege.
Using one for posts and the other for moderation. Of cause you will have to never upvote your own post with the mod account to keep that seperation.