Is this thread a joke?
Canada thinks because they won game two of a two game series after losing game one and getting outscored and outshot over the two games that the USA is on the decline? Have some humility.
Canada had 3 players older than 33 on their roster, and USA had none.
Here were the 7 USA players over 30 (theoretically their age would make them not in play for 2030 Olympics):
Chris Kreider (13th forward)
Brock Nelson (12th forward)
JT Miller (3C)
Connor Hellebuyck (Goaltender 1)
Vincent Trocheck (11th forward)
Jaccob Slavin (LHD2)
Jake Guentzel (Forward 5 or 6)
Truthfully, 3 of those 7 likely don't even make it back next year when form shifts around, and are total non-loss replaceable players. Guentzel had a good tournament, but I'm sorry there's no way you're convincing me he's some irreplaceable player when players like Thompson, Keller, Caufield were left at home. We have plenty of middle 6 winger options. Miller is good, but another totally replaceable guy when someone like Thompson was left off. Slavin is a good player for sure, but keep in mind Quinn Hughes missed this tournament (arguably the best defenseman in the league right now), Sanderson was the 7D (a top 20 defenseman in the league), and players like Luke Hughes and Lane Hutson aren't even likely to get into the team by the Olympics next year. USA certainly isn't lacking for LH defensemen. And as good as Hellebuyck is, he hasn't exactly delivered in big spots for the USA (or the Jets). USAH does not struggle for goaltenders. I don't want to say we're the best with goaltenders (Russia), but I don't think we're lacking with Swayman, Oettinger, Wolf, Knight, Augustine all coming through the pipeline.
The two best forwards, Eichel and Matthews, will be 33 and 32 at the 2030 Olympics. Someone like Jack Hughes will be 28. The Tkachuk brothers will be 32 and 30. Quinn Hughes will be 30. McAvoy will be 32. Fox will be 31/32. Werenski will be 33. All those players should theoretically still be towards the end of their prime. Elite NHL'ers don't really drop off at 30, 31, 32, 33. I mean, yeah, that's probably the last big tournament for those players at a high level (except potentially Jack Hughes), but you could say the same for MacKinnon, McDavid, Makar, Marner, so I don't see how that's some novel concept that players age out and are replaced by younger players.
If you're questioning if USA has future NHL stars coming after them, I don't see why not. I know Canada likes to think they rule hockey because they control the institutions and get the most 1OA's and first round picks, but that doesn't equal the best NHL players. Lane Hutson was drafted 62OA, and looks like the best player from the 2022 draft. That's the type of player that looks like one of the future star defensemen of the league.
If you want to measure if the USA has future stars of the league, look at it like this. Here are Calder Finishes the last 5 years:
2023-24 (#2 and #3 American)
2022-23 ( #1)
2021-22 (#2)
2020-21 (#2 and #3)
2019-20 (#2)
And the reality is that with Hutson and Wolf the USA is guaranteed at least one top 3 finish this year. Maybe the victory.
If you want to look at other measures like percentage of NHL'ers, Canada is the country that is seeing their share decline over time. Within 10 years, there's every chance USA will equal Canada for share of NHL'ers. USA has won the last two World Junior Championships. That was for the first time ever that they repeated. Their two best NTDP age groups (2001 birth year and 2004 birth year) are 23/24 and 19/20 years of age right now.
I don't possibly know how people could suggest USA had a small window of success and it won't continue. If anything, Canada is the country on the decline in hockey prowess and the USA is the ascending country.