Finding a franchise QB is a crapshoot. I will not hold that against the GM. For the success of every Carr or Prescott, there are tens of failures drafted in similar rounds or even higher. There are too many variables in getting a franchise QB.
Best moves have been re-signing Glenn and signing Incognito in Free Agency. These two along with Wood have really solidified the OL. Even the Miller draft pick has been an excellent choice.
To defend Whaley, he drafted and dipped in FA on the defensive side to give Ryan a chance to build his bully. Ryan failed.