You can argue about Belichick screwing up the last two weeks of the season with stupid play calling, no commitment to the running game, injuries to Lewis/Blount/Solder/Edelman, the dumb decision to drop kick up 14-0, the choice to use Harper as a punt returner when Chung was doing a fine job, the refs bad calls in Denver, a piss poor OL, bad special teams gaffes in the Eagles game, the highest paid kicker in the NFL missing an XP---and the list could go on and on and on.
Blaming Rob Gronkowski from rushing back from injury when he clearly was hobbled and had to miss one game wouldn't even be on my radar. Nowhere near it, to be honest.