I do wonder if Tomlin wants to play that way or if he has thought he has to. They slung the ball all over tarnation when it was Ben in his prime, AB, etc. I still blame Tomlin/management for not being able to get better players in here, though, so they don't have to run a Flintstone offense.
My issue isn't necessarily with the lack of passing attempts, it was with the kind of passing attempts we did. Almost dead last in play action is one example. This is not acceptable in the modern NFL unless you have a top 5 QB.
Play action makes things easier on the QB. You get the defense running one way and then throw it the other way. It's pretty simple. Every single fan understands the mechanics of it but Matt Canada preferred these stupid straight dropbacks like it's 1983 and our QB is Dan Marino.
73 play action attempts all year. Tied for second to last. Most of the league was over 100. And the top of the list has a lot of successful offenses with QBs that we can safely describe as "mere mortals" (Lions #2, Browns #3, Dolphins #6, Packers #9). Only 15% of our passing yards came from play action, this was also almost dead last in the league. Most teams were around 20%. A full 32% of the Falcons' passing yards were from play action! They had QB, WR, and RB talent roughly similar to ours and still managed significantly more out of it than the Steelers did by being smarter.
And when he did drop back, Kenny was the second most pressured QB in the entire league with at least 200 passing attempts.
So again, the scheme was stupid and unnecessarily hard. And a lot of the players couldn't execute it anyway. But did we try to switch it up? Eventually, but it took nearly 3 full seasons of having the worst OC in NFL history and letting our QB get crushed to pieces to get there. And then once we fired said OC suddenly, magically, everyone - including 2 of the 3 QBs on the roster - got a lot better!
I think it's beyond dispute that this was not an appropriate environment for a young QB. Probably not any QB. Canada's system was simply not going to work and it was malpractice to keep him as long as the team did.