Since Bloomberg’s Mark Gurman began his career reporting on Apple rumors as a teenager at 9to5Mac, he has leaked countless products and even more features: he’s now widely regarded as one of the greatest Apple leakers of all-time. Rumor list 2022 ⏳ iOS 16 public beta releasing alongside beta 3 ⏳...
appletrack.com
He has better stats that Prosser, and most of his predictions are not about sating the obvious. Just read the list.
I don't know the guy, but I find it strange that, on macRUMORS, Gurman is so much disparaged despite being the main source of accurate leaks.
As for Prosser, and don't mind him. I think many don't like his style in YouTube videos.