Well, I know what you're saying isn't really completely accurate for one reason.
Waddle wasn't on the team then. In fact he was a commit and still came to Alabama even with Tua not being named starter. Not only that, but that class of Ruggs, Smith, and Jeudy (and Najee for the record) all came to Alabama when Hurts was the starter demonstrating the same deficiencies in his passing game.
Let's contrast this to all the great receivers that were recruited to Alabama in the following years, with 3 different Heisman finalists, 3 different first round draft picks at QB over 5 years: Metchie... that's the entire list. Arguably the worst period of WR recruiting since Saban has been here.
So Hurts as the starter got us, Jeudy, Smith, Ruggs and the following year because he was in high school in 2017, Waddle. Then with Tua, Mac, and Young as the starters brought in Metchie and umm, some guys that haven't done anything really.
It wasn't just about recruiting the highest ranked guys out there either, Smith was the #34 WR (according to ESPN), Ruggs was #23 WR these were not 5 stars or what have you (except Jeudy who was #3).
The point, which is pretty easy to see is that it's far more about identifying, recruiting, and developing talent than who is playing the quarterback position and if Hurts had been properly developed things would have been fine there to, he is one of the best quarterbacks in the world after all.