Yes, somebody has to hold the ball in the end zone, but it doesn't have to be the same person over and over, and the person that isn't holding the ball in the end zone was not irrelevant to how the ball got to the end zone. That's the point (or one of several points) your fantasy football view of the NFL doesn't understand.
I didn't compare Jones to JArwin - as usual, you missed the point. The point was, and I'll try to type slowly so you get it, is that there is more to judging a player than how many times he stands in the end zone holding the ball, and that even truly elite players don't always have big TD numbers.
Read slowly, learn, understand …
As for a TE dominant passing scheme, what the hell are you talking about? The TE hasn't been the dominant receiver on the Cowboys in a number of years - not ince Witten was in his prime. The WR's have been the dominant element. I haven't said anything that would suggest that would change.
The team may occasionally go with 5 WRs in a formation - the Cowboys have done that at times in the past, and may in the future. That isn't something you just made up on your own. But it isn't, nor should it be, a frequent part of the offense, and, of course, even when that happens, one of the guys split out will likely be Jawin anyway.