In my opinion, people are pretty silly about how they think coaching works, anyways. Fans tend to think it's motivation and pushing buttons that gets teams to play better. I think the reality is that a staff is responsible for the overall scheme and for communicating to the scouting departments what they want in terms of player skills. From there, most of the time coaches spend with the players is in installing the system, teaching the concepts, working on the fundamentals, working on health, conditioning, assembling the right players for the various personnel packages they want to play, and backing those players up. Then in putting together the game plans diagnosing tendencies on film, and then putting in wrinkles they think are going to work.
The actual work on game day of calling plays and motivating players is a lot less significant than what they do the other 97-98% of the time. And even then, it's usually the product of joint decision making across the whole unit staff and not just one person, anyway.
So, as far as young players like Dak or Zeke go, of course the staff gets some credit for creating an environment where those players can learn as quickly as they have learned. I don't know how unique it is relative to other teams in the league. I do know Dallas is pretty stable and pretty organized relative to a lot of teams right now. And I know we've got a ton of QB experience on the staff and with Tony for a young guy to lean on. It's pretty much the perfect place for a guy like Dak to land.
As far as credit goes, it's always the players that play and the teams that assemble the best players that tend to win most of the game. That goes for Dak, too. Just like it went for Stephen McGee or Dustin Vaughan before him. Just because you're not a good player, it doesn't mean you don't have good coaching. But I think it's rare that you see good players who don't have good coaching, too. The rate at which Dak has improved from the draft until now, I think it's pretty obvious that he's had the benefit of some really good instruction.