Okay is he explaining in any way why factions like the Atom Cats or the Gunners are much better like the Kings or the Boomers?
The Kings may be Elvis cosplayers but that is because they recognized that his look and style were symbolic. It appealed to pre war people so much that they wanted to be like him and follow his philosophy.
That is why the King feels that he is just continuing a tradition, keeping the spirit of the King alive and showing and teaching other people how they can be their own king.
The Atom Cats are just greasers because Bethesda designers have this weird hard on for 50s culture, and probably because the Kings worked in FNV they though greasers would work.
There is no philosophy or reason why the Atom Cats talk and behave that. What are they rebelling against?
The Boomers. Sure they are gun fanatics and perhaps a little too casual when it comes to handling explosives, their kids having gotten the idea that these are everyday items you use in the house.
And of course that everyone who is not a Boomer is a barbarian that needs to be blown up.
But they are not completely crazy, realizing that even they need to interact with the outside world in a way that doesn't involve shooting at each other.
They have a philosophy that defines them as a group.
The Gunners, they are basically a bunch of better armed bandits or raiders Bethesda has thrown in as mid tier enemies.
What makes them different from bandits? I can't even call them mercenaries because they don't take on jobs from anyone.
No effort has been done to really make them a faction.