Here is how the OL has ranked this year according to PFF:
-Cole: 47.0 grade, 33/36 ranked C
-Seumalo: 62.5 grade, 30/76 G
-Daniels: 55.9 grade, 44/76 G
-Herbig: 49.4 grade, 57/76 G
-Jones: 58.4 grade, 46/72 T
-Okorafor: 49.9 grade, 63/72 T
-Moore Jr: 29.3 grade, 72/72 T
But yes, it's only a problem with Pickett and Canada! There is nothing else wrong here!
Go look at the actual teams who have won recently. Which ones of them picked their QB while everything else was a mess and had success?
The most successful team in recent years has been the Chiefs, who already had a great team and replaced Smith with Mahomes. The new greatest team looks like it's going to be SF, who already had a great team and replaced Garoppolo with Purdy. Both of the Steelers SB wins under Ben were the same exact strategy, he replaced Maddox and was surrounded by an insane supporting cast. Hell, even the Patriots going from Bledsoe to Brady fits this too. The Rams had a great team with Goff, then upgraded from Goff to Stafford and only won after that.
Why do you build the team up first before getting a QB? Because it has shown that you're far more likely to win by doing that than going the other way. Look at how Indy ruined Luck, who was a generational QB prospect, because they didn't support him. Look at how Detroit failed with Stafford and it took Stafford to going to an actually good team for him to win.
The Steelers are in the mess they're in right now because they refused to rebuild the offense after Ben and instead just tried to plug and play the new draft picks, while doing nothing to address the issues on the team. This team has had the same exact problems with the running game and OL since like 2018, and has had the same issues with the passing game since Ben retired. Drafting Harris and Pickett back-to-back years was just entirely shortsighted decision making with this team when they needed to make large fundamental changes to the offense. At this point, trying to get a new QB to replace Pickett would be the same exact thing: a deluded organization who fails to realize they need to make major changes to have success in the future.
The shortsighted decisions of trying to win-now are why the team is in its painfully mediocre state, with massive flaws on the team and only being bailed out by a few ultra talented pieces. These ideas of "we're just a new QB and new OC away from winning!" is just kicking the can down the road for actually addressing those massive flaws, and those massive flaws are what will prevent the team from winning again anytime soon.
I don't want to keep Pickett as the starter because I think Pickett is great and should be the starter. I want them to keep Pickett as the starter so they focus on fixing the fundamental issues on the offense, then they can kick Pickett to the curb for a new QB.