No, you absolutely need to look to the teams who are winning with consistency to see what is feeding their success. You don't look too long at Patrick Mahomes because there's only one of him, but there is a lot to learn from how they manage their roster. It's the same with teams like the Ravens and the Packers and the 49ers and so on. If you can't look to those who are succeeding and learn anything from them, then that's on you. The same goes for teams who are mired in failure. A wise man learns much from watching fools.
It just so happens that both of those teams have/had the best managed rosters in the NFL, and there is a lot to glean from how the QBs for those teams also manage those around them. You can't have Brady or Mahomes, but you can seek some of those more important qualities in your next QB. I would encourage that strongly, and the reason why is because it is obviously working for the Packers and 49ers who never seem to be without a QB and always seem to have their next franchise QB on the roster even when they are bridging gaps with other QBs.
There's an edge to be had in this league with how the roster is managed. We're just not taking advantage of it yet.