Vasilevsky.
People acted like he was unequivocally the best goalie in the league. I'm not sure he was ever the best goalie in a entire season.. looking a bit deeper.
2017-18
Finishes 3rd place as a Vezina finalist.
He had an incredible workload with 64 games played so it does put his sv% into perspective which was good for 16th best in the league. His team was also pretty awful defensively so it makes sense he was nominated over Bobrovsky and quick who had virtually identical stats and GP.
But..Gibson was 8th in sv% with 60 games played. Dude didn't even finish top 10 in vezina voting that year. Yeah, his team was defensively excellent, finishing 3rd in GA and 2nd in PK%. But that didn't stop Rinne from winning the Vezina with a nearly identical sv% and an even lower GAA. His team was 2nd in GA and 6th in PK%
And for those who like advanced stats, he was 46th in high danger shot attempt sv%. A ton of players who had overall better sv%s also ranked higher in this category like Quick, Bobrovsky, Luongo, Gibson, etc.
2018-19
Vasi was 6th in sv% playing 53 games
I dont think he deserved to win much less so decisively over the rest of the competition. Bishop led the league in sv% playing only 7 less games than Vasi. Same deal with Lehner. Both had a noticeable gap over Vasi in sv%. Kuemper also had a virtually identical GP and sv% to Vasi.
And this time around, the Tampa Bay Lighting were very good defensively. Finishing 1st in PK% and 7th in GA/GP. Bishop's team in comparison was 2nd in GA/GP and 5th in PK%. Lehner's team was 1st in GA/GP but 17th in PK%. Kuemper's team was 5th in GA/GP and 3rd in PK%. You get the gist, Not a huge team difference defensively.
And it's not like these guys had worse advanced statistics. They all had a better high danger shot attempt sv% than Vasilevsky.
2019-20
3rd place Vezina finalist, 16th in sv%, 3rd highest workload among goalies.
Don't really have any qualms about this one. Most goalies ahead of him in sv% didn't come close to his games played, and the ones that did were picked ahead of him. Although I think you could argue Markstrom who had identical stats on a worse team, or Bishop who finished 10th in sv%. Both just below 10 games short of Vasi's workload
2020-21
Runner up to vezina, 6th in sv%, 3rd highest workload.
I actually think this would have been a more deserving Vezina win than the one he actually won.
But again, it's far from being clear cut that he deserved being placed higher than Varlamov or Saaros, both of whom played just 6 less games but with higher sv%. Saaros was on a pretty bleh team that ranked 29th in PK% and 11th in GA/GP. It's pretty impressive he managed to finish 4th in sv%. Varlamov was 2nd in sv% and his team ranked 6th in PK% and 2nd in GA/GP. Just slightly better than Vasi's team finishing 4th in PK% and 6th in GA/GP.
I will say, the one thing he has over nearly ever other goalie this particular season is that he was 2nd in high danger shot attempt sv% and a pretty huge gap over the likes of Varlamov and Saaros who are outside the top 15 in that category.
To sum it up. While I do think he was one of the best goalies the past few seasons, he was never unequivocally the best goalie in the league. He has 2 top 10 sv% seasons, both 6th place. He never dominated other Vezina candidates in peak or consistency and a sizable portion of his Vezina record placements are highly debatable.