Do you need to log in the forum to read the forum post? No.
You are trying to create a point but you have no single proof other than some facts which can/can't be true. What if they are only reading the forum?
Apart from that, I really don't see why anyone would be interested to check out whether he is a farmed account or not because even if they are, did they make something wrong kinda abuse etc? If no, why arr you bothering even?