In our case, from the testing we did, the admin user who originally flagged also cannot flag again (surprising since you’d think the admin can do anything). Other than that clarification, all you say makes sense.
In fact, I very much support flexible uses of tags. Hence, this topic a ux question to understand how and why people do other things than what I’d thought of.
Not all flags are negative in nature
Sure, but in that view (which I like), making flags a bad-mark against a user isn’t desirable, is it?
I still have the question: after “agree” + “keep post”, what benefit to anyone has occurred? For instance, is this helpful somehow in marking a topic to split?
EDIT: I forgot that marking “disagree” on a flag can be a bad mark against the flagger! We wouldn’t want that… so maybe this exists to basically clear the post without that?