Spoilers for Picard season 3 and Prodigy
This Akira class ship fought a Borg cube in 2373, was a victim of the cyber attack in 2384 which caused it to fight it’s own fleet, and was caught up in the Borg stealth-assimilation of half of Starfleet in 2401 which probably led to a lot of it’s crew dying.
I do appreciate the more realistic lifespan, starships are massive investments that should last at least a few decades and are designed with continuous upgrades in mind (unless they’re called “Enterprise” apparently).
Wait until you find out what happened to the original!
At least the OG 1701 got a good lifespan - it was no Miranda, but 40 years is great for an Enterprise.
The decommissioning of the A seemed a bit premature, though, considering it was a new ship that was relatively salvageable. Maybe its battle damage was just too much and that’s why it was given to the museum. Alternatively, the A was originally a different Constitution class undergoing a refit was was already quite old by Undiscovered country.
There’s a good chance the B lasted a long time too, though there’s no canon source to its demise, only that it’s not in the fleet museum.
How long did the NX-01 Enterprise last?
According to Memory Alpha, 10 years because the ship was supposedly obsolete by then.