You make it sound like only bad goalies give up bad goals.
Anyway, the idea that a "really bad goalie" could win two Vezina trophies and a Conn Smythe trophy is just really absurd. He was "extremely fortunate for a couple of years" is equally foolish.
No, but they're more prone. And that's why it matters. You don't want to expose risk, when it's not backed by upside. Being erratic in net doesn't usually have a good ROI. If Ray Bourque played defense like Marc-Andre Bergeron...would he still play? Yes, of course. Because there's upside in what Bourque could do and it's worth suffering through the negatives.
I want "plus" goaltending. I don't want Steve Mason or Jean-Sebastien Giguere. Hasek was very calculated. Thomas and Cechmanek, much less so. That's why the bottoms fell out so quickly. If we flip Thomas and, say, Johnny Mowers...no one would bat an eyelash (I don't know if Mowers was technically repugnant or not).
The last sentence is like when you lose your keys and you go, "they were in the last place I looked!" Yeah, because after that, you stopped looking. He got away with a couple of ~50 game seasons in a save percentage pump situation. Cechmanek had to deal with Hasek/Brodeur/Belfour etc. otherwise he has at least one Vezina himself. It's too binary.
Assuming that save pct and Vezinas are 100% the product of the goaltender...isn't it foolish that you think that you had the two best goalies - interchangeably - at the same time? In a 30-team league...
From 2008 to 2015 (min. 10 games) the save pct leaders are:
1. Hammond
2. Darling
3. Pickard
4. Talbot
5.
Rask
6. Schneider
7. Grubauer
8.
Thomas
9. Jones
10. Vokoun
11. Lundqvist
12. Holtby
13. Mrazek
14.
Svedberg
15. Price
16. Rinne
17. Luongo
18.
Khudobin
Man, four of the top 18 are Bruins...that's lucky. Especially because two of them were hardly NHL caliber away from Boston/Julien. Only one was really starter quality (Rask).
I see Lundqvist and Cam Talbot as Rangers, but does any other team have two there? The next guys are John Gibson and Craig Anderson, so I guess that would add a second Senator with Hammond. But Boston with 4...man, that's lucky I guess. They must practice really, really hard there...and then, not...umm, as much elsewhere...