For starters, could the criticism have been any worse then Belichick taking another late round projected safety in the 2nd round? Second, you aren't hearing people complain about Richards not getting any playing time. How many 6'3 wide receivers in the NFL do you regularly see playing special teams? This is not a surprise!
No one expected Strong to come into the league and be an Amari cooper. For Heavens sake, 2 of the top 3 WR's in this years draft haven't even played a single snap this season, can't be much worse then that.