It is a pullet nearing POL. The people that are saying rooster are wrong. First clue is that they're calling a young bird a rooster. It would be a cockerel. Second is that they don't know what they're looking at. This bird has zero male traits that would be very obvious by now.
I have a pullet (now a hen) that crows. That isn't always an indicator.
Number of chickens someone has had etc means nothing if they didn't put in the time and effort to properly educate themselves. One of my friends has never had chickens. She could go out tomorrow and buy 400 chickens. Then she could say she owns 400. Does that make her an expert? No.