He was one of the first, if not the first, to report on Dragusin.Who was the last big one he broke before reports anywhere else?
He owes his career to Bruno Fernandes. He's been living off that transfer since it was made. There's a reason he's become a meme.
Also there's 1000 reports every day that are nonsense. So if he was just copying other reports, 99% of his tweets would turn out to be unreliable. But it's the other way around, he gets it right unnervingly often.
He's simultaneously reliable but also used by agents and selling clubs to make more cash. I prefer Paul O'Keefe more as he gives more detail i.e. if its just intermediaries negotiating or the club itself.