Perhaps good culture at that scale is simply the absence of culture—beyond simple items like accountability that largely boil down to "have a spine". If Kool-Aid doesn't work at scale, then better to not push it at all.
How strict the rules are is part of the culture.
You're just redefining everything as vague as possible (by changing strictness of accountability to a "simple item" with no details) to say the culture doesnt exist.
The operative word was no culture beyond items like accountability. That is to say, accountability certainly does constitutes an aspect of culture.
I did not go into detail because the minitutae of accountability as it relates to culture didn't seem relevant.
The gist of the comment was that you can't really pervade a large organization's culture with a high amount of genuine motivation, and if you can it's extremely hard.
Even space agencies suffer from shitty culture at times, and exploring the universe is arguably one of the purest forms of Kool-Aid in existence.