I've seen this list making the rounds, but it isn't really accurate.
First of all, it ignores all of the defensive stops on potential game-winning drives in tie games -- at least 4 between the Cincinnati/Baltimore OT games alone. (Apparently every OT loss is automatically an 0-for-1 for the defense by this measure, regardless of circumstance.)
Secondly, it's not even consistent in only looking at "final drives" -- there were 3 drives after what they call the "game-winning FG" in the Arizona game, for example (one defensive stop, and two offensive drives that produced zero points when a FG would have taken the lead).
And in addition to Arizona, there have been other late defensive stops they've made when trailing by 1 score or less, to give the Vikings offense a chance to win or tie (2 more vs Cincinnati, a bunch vs Cleveland, etc.). And stops that gave the Vikings offense the chance to extend the lead to more than 1 score.
Not to say the Vikings defense has been perfect -- of course it hasn't. But they're not "0 for 8" in any meaningful, consistent measure.