I mean, you could say the same thing about the TOS films. TOS is set in the space 60's... TWOK-TFF in the mid 80's, and TUC in the early 90's. Those characters are far more stagnant, but at least you have an in-universe explanation as to why that happened.My biggest criticism of the "nostalgia " is because nothing feels earned. It's putting all the pieces back like little has changed in the lives of the characters and ends with a poker game.
It has elements that grows from events in universe, but ultimately, by the end, the characters become more static. And the villain reveal feels very recycled. So, while LD is more transparent in their use of familiar pieces it at least feels very change driven.
The character with the most change is Sulu, who leaves to command the Excelsior, and is later established in GEN to have a daughter.
Riker and Troi were already claimed by PS1. Aside from them...
Crusher has a son with Picard and goes into hiding. Worf leaves the Enterprise-E and becomes involved with Starfleet Intelligence. LaForge becomes a commodore heading the fleet museum and has two daughters.
Data was going to be resurrected somehow anyway following NEM. PS3 takes an approach very similar to the novelverse.
At best, PS3 is guilty of not killing off a main character just because they could.