0
"5-0" isn't the relevant stat if we're talking about Bridgewater, particularly since two of those wins came with 12 and 13 points, respectively. He may not have messed those games up, but he didn't win those for them, either.
Anyway, looking at his actual stats suggests he has played quite well, but it's only been over a few games, so I'm inclined to think he's playing a little over his head. Note how many close games they've been winning: that's not sustainable. If he reverts to his mean even a bit, those close wins are going to turn into close losses.
But as a general response, sure, Bridgewater's success is a potentially meaningful data point that any reasonable person would have to use to reconsider and reevaluate some of the things they thought about that situation. Even though I expect, with more time, they'll be a lot less to explain. If he does, then I will definitely conclude that the Saints as a whole--at least the Saints of the last couple years--are a bigger part of Brees' longevity than previously believed.