I don't buy the goalies are voodoo premise which gets vastly overblown. Goaltenders are most definitely inter-dependedly tied to the quality or not of team in front of them. Schucker's study albeit a bit dated reinforce the success of first round goalies is not far off those picks used on forwards or defensemen (especially once you get out of about the top 10 picks of every draft)
https://myslu.stlawu.edu/~msch/sports/Schuckers_NHL_Draft.pdf
In the last 20 years, scouting has come a long way and draft picks are...
canucksarmy.com
We're seeing with more frequency high pedigree goalies bend the curve in getting to the NHL earlier and not requiring the long, extended minor pro or European development cycle perceived as a barrier to investing in draft collateral. Carter Hart is another young, established NHL tender not on your list. Yzerman, a smart GM who's been a Cup winning builder, just invested a mid-first round pick in their rebuild phase in Cossa to position itself with a prospective elite goaltender as the team begins to look to move into its competitive phase. Minnesota with Waldstadt who is coming to North America this year.
Regarding Schwartz, I have an incomplete view of the totality of his work. Hard to make chicken salad when your organization opts for an ancient 'battler' and another thirty-plus KHL graduate, both fully formed in their games and technique. As he's worked with Skinner, the lone organizational hope, from the player's young amateur age through junior, AHL development and cup of coffee NHL work, there would seem to be some credibility to Schwartz's work ... he's taken one of 9 wasted draft picks farther than anyone else.
There's a couple ways to address organizational goaltending quality. Draft high pedigree goalies or play spin to win throwing a volume approach like the Oilers have done. The opportunity cost is you lose a higher likelihood of finding support organizational forward or defense depth guys when you opt for volume over quality. Miss and your in the situation Edmonton is paying for old talent with a questionable succession plan just as this team's elites enter prime years.