" i've read, is that they're enforced"
A society without rules is just a school of fish, and a without penalties for breaking those rules, you lose half of encouragement. Look at what happened with communism!
Perhaps Sally was too scared of becoming like Robonik to bring down the hammer when it needed to be brought down to bring her fellow machines in line to obey as -machines- should.
And Sally, having fought her entire life for the freedom of mobians to have their own choices, didn't realize that unless an individual is willing to let part of the individual die, then the whole can not live. That's what the sense of unity from culture IS! Sally would violently reject these answers thinking that all the opposing pieces would fit together ON THEIR OWN.
It's also possible that while they kept their freedom of will and emotions, they tried TOO HARD to continue life as was, not realizing that their new existence as machines would require them to adjust their culture, which they might violently refused to do even though it could no longer function the way it had when they were flesh and blood.
And yes, everyone DOES try to impose their own views, it's human nature, we'd be living in cubicles typing to each other if we didn't.
And 9 is a good movie comparison to this since the nine rag dolls have to figure out how to survive after the end of the age of man.
Some wars are fought over ideology, others are fought over resources.
The ultimate joke is that robians perhaps CAN reproduce (since the robotocizer was supposed to make a techno twin to ALL their internal organs) but THINK they can't, so they don't.