Did I miss some part of this season where Eric Reid did something
In fact, you did. Like most fans, you judge a player by what you see on TV. In the case of a QB, your evaluation probably isn't terrible because you see him the whole time he's a factor. In the case of Eric Reid, you're probably judging him based on 6 or 8 plays. But the guy played about 700 plays. So, yes, you saw about 1% of what Reid did this year. If he jumped a route, forced the QB to pull the ball down, and it resulted in a sack by Mingo, you'd ballyhoo Mingo for All American and you'd have no idea it was Reid.
Last year Reid took the ball from a Bama guy and turned that game around. This year he took a couple of bad angles and gave up a couple of TDs. So last year, AA, and this year, dog shite.