No long-term plan? Well they want to be able to survive the post-apocalyptic world as its strongest survivor, that's actually there main goal so yes they have a long term plan.
Then stop with all the purity and honesty crap, comparing them to Batman as people who go above the law for justice. They mug people for guns, please tell me how them blowing up the NCR gold reserves bringing economic collapse on a whole civilisation is justifyable? Oh the NCR GOVERNMENT is corrupt so I guess it's okay.
Obsolete? There doctrine was practically fabricated on the basis of a post-apocalyptic world.
Being high-tech raiders... I guess your right.
No purpose, honesty? They have a purpose, it just doesn't involve going around grabbing land and killing people for absolutely no reason. Honesty? They are noble to their cause and to each other as brothers and sisters in arms.
They have no long-term purpose, collct guns to get stronger to collect more guns; how does that improve anything? As for the latter, so does the NCR and the Enclave, President Richardson was willing to martyr himself for the Project because he
thought that his people and the human race would be better off.