I don't agree with the prime directive.
What difference does it make if you intervene in the fate of warp capable civilizations? We've already established that theres a range of technology capability been different
chickens civilizations, even once they've achieved warp.
Maybe it's medicine. Maybe a disease affects one that they can't cure, but they have warp 1. How would intervening with them not change the course of their history? A warp 1 civilization would never survive a world ending scenario on their own. But because they've met the arbitrary threshold starfleet can help.
But the civilization in the same situation that hasn't met warp won't be saved, despite both civilization being doomed.
And as far as barbaric civilizations go...pretty sure humans displayed some barbaric tendencies still in First contact.
Imo save who you want to save for any reason. By interacting with any civilization at any state you're already altering the course of their history.
The prime directive was just a writing strategy to create tension for the characters. It doesn't make sense on its own.
I mean, the Prime Directive is kind of high-and-mighty, but necessary. I think The Orville did a great job of depicting the purpose of it.
It's almost like an average point of maturity, like a Bar(t) Mitzvah or a Quinceanera.
The "mature" races over a significant amount of time in the beginning, tried to uplift "younger" races whether it was technological advances or even medicine. While some cases there weren't any issues and they strived, but then others end up succumbing to greed and end up going to war on their home world or something and ultimately end badly somehow. So at some point, there had to be an "Maturity" level added as in MOST cases, once a civilization has developed FTL, TYPICALLY the entire planet is working together torwards that goal of a Utopian society. Obviously there are exceptions to this as well, but I think its more of a general good/bad experience ratio that determined the needs of a civilization needing to reach Warp-Capability. And the welcoming to the rest of the galaxy is so moving to realize that your world is not the only world out there with civilization.