I almost agree with you, but Jerry proved you wrong though when he won three super bowls. I don't care if it was the 90's and over 20 years ago, the fact is, Jerry has proven he is capable.
Had Jerry been controlling, meddling, and over all a major hindrance over the last 20 years? Of course he has, but the question now is has he changed? It's easy for us fans to remain skeptical of Jones but I would argue that after all he has been through that just maybe we are going to see a changed Jerry Jones!
Lets look at the facts, He has let McCarthy have TONS of control, the whole staff has virtually been blown up, things feel different. Sure in the past it's easy to point at the coaching, lack of winning attitude from Garrett and or Wade, Campo, Gailey, ETC, but the wagon seems to circle back to Jerry no matter what, I get it. HOWEVER, this is a new day and I believe that the needle is point up at this moment so I will be grateful for that. I do want to point out I agree with you, Jerry has been bad for this team, but Garrett is a horrible head coach whom Jones really never grew to respect when it came to the product put on the field.