I highlighted the logical fallacy in your argument.
Here's the thing. We now have players from dozens of countries, whereas back then 95% were Canadians, and Canada was not winning every Olympic gold medal or World Championship. So that means several things.
A) It wasn't the pinnacle of competition as it didn't include all the worlds best players, just mostly Canada's best. Which is like the "house league" comment that got this all started. It's not incorrect in applicability.
B) The atomizing occurs when you imply that the competition level of the individual players predominantly from 1 out of 200 countries (that wasn't always the best) is equivalent in the context of having players from many dozens of countries in a 32 team league vs a single country 6 team league.
C) Absolutely, being in a 6 team league doesn't render past accomplishments moot. It does render them entirely non-equivalent however. It is now up to the individual to decide for themselves if winning a cup in 1962 was similarly or more difficult than in 2022.
I don't see the fallacy. On the contrary...
A) It is and was the pinnacle of competition because the pinnacle of competition isn't defined by the nationalities represented but the teams in the NHL Stanley Cup Finals - the pinnacle of hockey itself.
If Tampa wins without Point and Kucherov and Vasilevskiy, Tampa wins. Martin Lapointe isn't routinely mentioned as a great Red Wing on those great Red Wings teams, but he is a Red Wing on those great Red Wings teams and his value as a champion is equivocal with Point, Kucherov and Vasilevskiy.
B) Consideration of the game's best has never been from a pool of 200 countries; It is if you value the Olympics or The Canada Cup above The Stanley Cup. You validate that model and any one like it and you undercut your claim until the best that's ever been produced by every country is represented. It's perpetually self-refuting. The league is great as a whole, past, present and future entirely and absolutely in each championship won in it's particular time.
C) Respectfully, you're missing the point. Gretzky has said McDavid is this or that degree above himself commensurate with the game's evolution. He's also said Gordie How is the best player to play the game. When you diminish the objective value of past championships that's the reduction of objectively absolute accomplishments into lesser, subjective parts...and they're not.
If a person says, if the 1934 Chicago Black Hawks took the ice against the 2015 Chicago Blackhawks they would lose, that would be a preposterous comparison. Begin with the era's equipment and the scenario ends. If that's the essence of your claim, I don't think anyone in their right mind disputes that but moreover...really considers it a valid comparison in the same way anyone might consider a race between Jim Clark's Lotus 38 and whatever Helio Castroneves won the 2021 Indy 500 with.
But in the industry, Jim Clark remains a byword for excellence in this or any other era. He isn't marginalized and his accomplishments aren't diminished as subjectively less because his equipment is/was objectively less