For this fanbase especially, it's going to feel like we're bending over backwards to give the guy chances. But the Pats know the value the club had to expend on each of them respectively, and they have seen that Mac can do it, or could do it for one campaign. Now the project, all the way around, is "let's get him back to where he does do it, reliably."
Only really great players eliminate or even close to eliminate INT.s. Right now there's no excuse, in the absence of TDs on the other end of the scales, for the present frequency of them. But we as fans are spoiled. It might take a minute to get on track.
Here's some math on how it will feel. Let's say Mac gets back on track and can get us (gasp) 30 TDs in a season, but ends up with 17 Int.s. That will feel like hell to a Pats fan, because it means each week on average seeing 1-2 TDs and 1 interception, on the regular. However, that performance level might be good enough to be your SB QB, given the right pieces elsewhere. Shocking. It's not the ceiling, but it's definitely okay for now.
As much as we like to trumpet from the high heavens what level is "unacceptable" and other faux-in-control verbiage, what looks "unacceptable" to us is a more likely outcome than immediately finding another "elite" guy, especially in the short run (cue early Brady comparisons).
But that's not this -- what MJ has turned in so far this year is not getting the job done, even to that lower bar.
If he continues unimproved, I'd be for an open competition in camp, certainly. But whenever he misses time, BZ is awaiting another opportunity to prove he can belong. In one way that's a great dynamic, but if MJ IS the guy, not great for his confidence. Then again, saying "You're the chosen one" hasn't worked that well, so.