Just like cars are so common now, and you can walk out your door and never ever see the same model twice! Oh, wait a moment...economies of scale, mass production, modular design, I forgot, sorry
Car is great example but better, ships
The smaller, the mass produced they are, but still many types.
The bigger the more uniek they are.
That so urging for a PCG. But rarely done.
Because gamers demand good locking spacecraft. But then conflict with reality as not working vessel.
But I go for practical i stead slick design. Take spacecraft as they are.
Also it could be possible to build your own ships partly with PCG
Also there are different level of PCG
Runtime generated using seed.
Pregenerated and tested
Generate the base and arteam finished it.
User content generation depending on custom ruleset.
Personaly I would go for PCG myself.
No need to team up with artist and related
the much more efforess quantity.
It has it uses. But if you have the budged to get very talented artist designing handmade game content that has it value to. Often quantity isnot a isue.
So it depends.