Russia actually has a great group of senior women around Lindsay's age who don't seem to have plans to retire soon: Anna Frolova, Sofia Muravieva, Ksenia Gushchina, and Kseniia Sinitsyna, among the better known ones. All would be competitive for top prizes if performing internationally right now. All are supported by the Russian federation.
When the age change was introduced, people assumed it would be an issue for Russia. Russian officials, meanwhile, said they were confident they could adapt. It seems they were right to some extent; yes, there are still girls who peak and bow out earlier, but there are plenty of strong women who make it through to adulthood. (Liza Tuktamysheva was a great role model for them.)
It's really countries like the U.S. – who, ironically, seemed to support the age change – that seem like they're going to be most hurt by it. The sport is simply too expensive in the U.S., and the opportunity cost of skipping university is too high, for the country to support more than a tiny handful of top senior women. (I'm talking about women who are actually competitive for significant international prizes, so not the Sonja Hilmers of the world, no disrespect to them.)
And who even knows how much longer those top few women will be around. Is Isabeau really going to last that much longer, especially seeing that she's already missing significant time at a young age? Will Alysa return to retirement after cashing in on another Olympics? Does Amber, at 25, have enough gas in the tank to continue beyond this cycle? Sarah is planning to attend American University starting this or next year, how much longer will she be fully committed to competing, especially when assignments she arguably earned, like Worlds, are being given to other skaters? Similarly, Elyce is the daughter of a professor and definitely plans to attend university at a normal age. Ava has vanished. I could go on.
And the fact that USFS plays favorites, pushing skaters like Lindsay out of the sport, only makes things worse for them. It wouldn't surprise me if Bradie is next to bow out...she's made a truly impressive comeback, but you would be forgiven for forgetting she exists given how all-in USFS is with Alysa, Isabeau, and Amber, despite the fact that Bradie's average international score this past season was right there with the three of them.