I'm not sure why my line of thinking would be compared to an American neocon lol.
Fallout is literally a post apocalyptic landscape. You assume that a nation spreading itself is bad because you don't agree with politics in real life? It's not compatible, and rather dismissive. The wasteland is no longer America, and the NCR is not the United States.
Healthcare - Isn't bad just because more people are offering it in the Wasteland.
Security - Doesn't mean that a limited amount of robots is going to be sufficient to protecting the whole Mojave. In fact, the ending slides state the opposite.
Equality - Means that you won't be gunned down as a mutant citizen or enslaved and raped because you're a woman in the wasteland.
Culture - Same as healthcare, is not bad just because there is more of it.
Opportunity - With a structured society at your back? You guess.