What? Your the one ignoring reality? I literally just posted all the ages/production from the Kings team that missed the playoffs directly after winning the cup. Age/contracts for the extended window? Sure. The season directly after winning the cup they were one of the favorites to win the cup, had tons of core pieces still in there prime and producing, and still missed the playoffs. Even Justin Williams. He produced exactly the same the very next season.
Dustin Brown had 27 points in the regular season the year they won the last cup, and 27 points in the regular season they year after. Richards had 41 points in the regular season the year they won the cup and 16 in 53 the next season. He would be the only example of a guy hitting a wall .. but he and Brown were always lazy in the regular season with the Kings.
It is about more than production it is about roles too. And about more than one hiccup year, the following years it snowballed.
The year after the cup:
Richards went from second line center to barely a 4th liner… on his path of regression. He had been regressing for a couple years. One of the guys on the early side of the curve.
Still went from a good 3C to a 4th line level guy who had to play up.
Mitchell was a solid 4 who had to be let go because of his contract. Leaving a void.
Regehr continued to regress on what made him good 1v1 defense. Could take up the slack.
Voynov had his domestic abuse suspension start.
The next offseason had further regression of Brown. Gaborik fell off the cliff. Richards was gone. Williams left because of contract reasons. King has his style of play start to add up and was on his path to 4th liner.
That 2016 offseason, Kopitar’s big contract started killing their cap space.
In a period of 2 years they had two middle 6 centers regress out of any impact role. Lost a top 4 defenseman (who was older) leave due to a contract they couldn’t afford. Two top 6 wing regress out of value. Another (older) top 6 wing leave due to contract they couldn’t afford. A third line have injuries mount up. Then a young top 4D get suspended out of the league.
That’s all due to age and contracts. There were other factors, but major roles there. By the time the depth was killed, they tried to hold on and supplement while they could for a couple seasons before deciding this retool path of the last ~4 years.
One you lose RFA value and age regression starts… it gets very tough, very quickly.