Subban's defensive zone lapses are so overstated that it is becoming extremely annoying to read. He is not any more prone to erring on the ice than any other defenseman on this team, or in the league for that matter. Even Chara in his norris prime was prone to one or two bigg gaffs a game, but it didn't bother anyone because he had this image of the ultimate complete defenseman.
People are still clinging to a false image and narrative of Subban as an offensive defenseman who is high risk and confirm that image by pointing to his errors. But, like I said, he isn't any more prone to errors than other good defensemen in the league. It is just a superficial way to detract from his talent and contributions. And when that justification of that image fails, people invoke his "character" to continue the detraction.
It's sad that people don't see how special of a player Subban is. It's even sadder that the management and coaching staff doesn't either and too fall victim to those false narratives.