Interesting... this is the first I've read of this.
LINK "Leno didn’t have his best season, and he was considerably better in 2018 and 2017. He’s still young (28) and will be motivated to improve. He needs to decrease the penalties, though I can tell you former line coach Harry Hiestand disagreed vehemently with probably half of the calls against Leno. That’s not to make an excuse for him but to point out the Bears didn’t believe he committed an infraction in many of the instances he was flagged."
I can believe that. If you think that some OL get a the benefit b/c of their QB and wanting to protect said qb, you can bet others don't.
I also have no doubt some games are fixed and the refs can easily produce winners/losers based on flags and when they are or aren't called. OL/holding is one of the easiest ways b/c we all know it could be called on every down. I still remember that SB where Pitt won in Det and it made me start to believe the NFL was WWE like in that the outcome was fixed, at least for that game. The Refs flags were beyond one sided in the first 1/2 and prevented the Rams any shot of offense. I'm not one to blame refs, and in most cases I don't believe it or like to, but there are some cases there is no question.
I'd obviously have to go back and look at every flag thrown on him, but I can see how Harry might say that. Think about how many flags we want called on Green Bay o lineman that never get thrown, and you can see how it might go the other way.