Another position that largely misses the point I think. There is no absolute positioning on this - LLM assistants are applicable at most stages, whether you need to maximize your own judiciousness or maximize velocity depends on the current problem, and you.
Open source (classical) & use-restriction is kinda at-odds, so it doesn't really make sense. That's not to say people don't do it - you can restrict the software however you want, it's just not open source (maybe look at some equivalent of Ethical Source?)
I think this shows a fundamental, widespread misunderstanding of space flight in general:
> you’d be developing new technology all along the way
Aerospace does not work like this. Hardware does not evolve until launch, it is frozen in time to allow for testing and flight qualification for subsystems, and systems as a whole.