I've watched every game of Dak's career and I'm sure you have too.
There's more beyond the box scores and stats.
Does he look consistently look like a borderline top 10 QB to you personally? Or does he look like a guy that needs elite talent all around him to be successful?
I am not talking box score and stats. I am saying that the players have Dak ranked borderline top 10, the coaches have Dak borderline top 10, the executives have Dak borderline top 10, and the talking heads have Dak borderline top 10. So either every group of NFL experts are somehow all incapable of seeing top of the Cowboys or, I like Occam's Razor here, they have seen Dak play and consider him borderline top 10 considering that especially for coaches, they have all seen a LOT of tape on Dak and understand it better than either of us.
You are right that I have seen every game of Dak but I also have seen the other QBs and when they do not have talent, and sometimes even when they do, they are not going to play well as even Mahomes and Rodgers have bad games. If we are expecting a borderline top 10 to be good every game against every opponent then I would try to find even a top 3 QB who can do that. I watched Brady that last year in New England, I watched Brees for several years with the Saints, and, I watched Stafford, though not often, for years in Detroit not be successful. The teams that win in the NFL not only have one of the top 13-15 guys in the NFL at QB but also surround them with elite talent that stands out from the others.