Let's keep in mind, UFM tried to go with a more pro-style quarterback the first half of the season. As we all know now, it didn't work very well.
A lot of people blamed Cardale - some said it was because there was no Devin Smith this year - still others blamed Coach Beck (and even UFM). Though it's become more pronounced in recent weeks (against elite defensive fronts) - there have been some issues with pass protection all season as well.
It may have been all of the above. As several have already mentioned - contrary to the good ol' days (especially, in the age of the spread,) you now often have to establish at least some threat of a passing attack in order to run effectively.
With the insane talent we have at virtually every skill position, it's remarkable that the passing game has been bad as it's been. We're currently ranked 100th nationally in passing offense, according to ncaa statistics.
I'm not so sure the pro-style-ish (Cardale) experiment will be tabled for long, however. I noticed that when JT was suspended, Joe Burrow was moved up the depth chart - behind Cardale and Braxton (who apparently will not throw at all this season) - but ahead of Stephen Collier.
After Cardale, the only qb on the roster with classic pro-style characteristics (tall with a big arm - and accurate) is Joe. If the struggles in the passing game continue in to next season, I wouldn't be too surprised to see more of Burrow a whole lot sooner than some may think -