So, in theory if someone somehow managed to farm, let's say 5 accounts up to Full member and Senior member and somehow implemented an AI for those accounts to interact around here while joined a signature campaign or a bounty, so the single person behind those accounts can get all the economical benefits, that would be acceptable as long as the quality of those posts are good enough and on-topic? Right?
That's irrelevant when forum itself allow you to use more than 1 account as long as you are good with forum rules. Why are you bringing the economical benefits here? If someone is active here for economical benefit only and that's from 1 account only, both he and owner of 5 accounts are in same category of course.