Totally agree with the first point. When Mac had two dynamic receivers in college, he was absolutely awesome.
Your second point is interesting and insightful, well put. BB is the greatest NFL coach of all time IMHO, and he is still among the best. One of his strengths has always been his adaptability, he adapts the game plan to the personnel instead of vice versa. However, as is typical for someone in his seventies who has enjoyed amazing success following a particular plan, I think he has become a little more set in his ways. As you correctly point out, with the transcendence of Brady at QB, BB as GM could mostly focus on the defense and assume the offense would still be a strength even with little draft capital devoted to the OL and WR. It worked for 6 Super Bowl rings.
...But now the Patriots have a young QB who surprise, surprise, is no Tom Brady.
Other teams with a recent new first round QB in most cases immediately spend very high draft capital on WR and/or OL. As examples, Joe Burrow got Chase, Tua got Hill and Waddle, Lawrence got his buddy Etenne who has receiving skills, Zach Wilson got Garrett Wilson, etc., etc. With the exception of a bottom of the first round guard, Mac hasn't really had that same type of offensive draft help.
It will be interesting to see if BB adapts and if more attention is paid to the offense in next year's draft, with more attention paid to WR in particular. On the bright side, maybe Douglas and Boutte become so awesome a new WR isn't needed.