I agree. The question is whether to give him another chance next year. I don't believe that he has developed as fast as we expected.
I don't know what expectation you have, but then, in general, it's a major failing of Patriots fans to expect rookies to perform as All-Pros regardless of draft status.
The question isn't whether to give him another chance next season, it's:
-- whether he's currently, or potentially, better than one of the other candidates for the two likely reserve C/G slots,
-- how much better would he be if allowed to develop on the Practice Squad,
-- and is he an investment who is likely to be lost if exposed on waivers - if yes, what does NE do with him?
You, and others, propose "hiding" him on IR where his chance of developing to his full potential will be limited, or cutting one of the other candidates who has gotten the job done in Camp and keeping the kid as a gameday inactive. I suggest that he is not "hopeless" (not to me, not to Dante, not to BB) and also not ready to bypass Wendell or Connolly (or Yates for that matter) as a reserve, inactive or not, and the best approach - for the team - is to try to get him past waivers and onto the Practice Squad where he can develop and be available as an injury replacement.
If you lose a 4th round pick to a waiver claim, c'est la vie! I have been pleasantly surprised with the progress of Wendell and Connolly and I'm no longer as anxious for the reserve C/G slots as I was when the primary options were Yates and Hochstein.