I dunno man.
If you gave any d-man in the NHL Bouchard's minutes from the playoffs last year (highest in the NHL by 50 minutes - basically equalling an extra 2 full games played more than the 2nd-highest player), his EV strength minutes (highest in the league by 87 minutes, basically 4 full games worth of icetime) they also would have led the league in +/-, and set an all-time record for points by a defenceman.
He's clearly not that good.
[/hitting the crackpipe]
He's elite, but anyone who gets his minutes is gonna have their gaffes. There are times in games when he's trapped on the ice for an extended shift and he's playing his 25th minute, against guys who are only playing their 8th minute. It's a recipe for disaster. it's like the 5th minute of reg-season OT when Draisaitl and MacDavid have been on the ice for 4 minutes. At some point you might just as well go stand behind the goalie and get ready to pull the puck out of the net.