Why do the Oberland Stationers even bother doing anything?

I mean, why are the settlers at Oberland Station even bother existing at all? They're useless they literally have only 2 people and clearly can't even take over the Hoover Damn by themselves? They will need at least some reinforcement from Jamaica Plains and the SS needs to rescue one of them from raider leaving only one (1) settler at the Oberland Station. Their only arsenal is a dying tattoo plant and rusty water pump they sleep on HIV+ bed are they capable of doing anything historically?

What are the lore implications of this, are they stupid?