To respond to OP title:
Newbie status in the forum does not always reflect that the person behind the account is actually a beginner, especially in this forum. Some ways of writing beginners can be identified that they are actually old members of the forum, or several accounts belonging to one person. So, basically can't be sure whether the novice account is personally owned by the novice. That's why there's no difference in privilege between the ranks to be suspect.

To respond to OP accusation.
Because after all sMerit is valuable, and very regrettable if distributed to the wrong people (if proven). You are not constrained to deny accusations as best you can with honest evidence. Sometimes there are things that are impossible to prove because of a principle (eg anonymity) and your evidence can be rejected by some members (perhaps subjectively judged). The final judgment is based on the point of view of each member and the fact that some people don't care about one's reputation.

By the way, will these accusations (account farming) prevent you from writing articles? In fact some people don't care about a person's reputation. And after all you write articles for everyone, right? I think this kind of accusation is only disturbing if the accused has a business.