Except it wouldn't be. It wouldn't be articulate explanations of their situation, maybe current reserves of food, water, and air, nor of any meaningful footage of construction, exploration, or scientific progress.
What it would be the glorification of one person's feelings being hurt because of another and, since you suggested it, a mouthy, annoying narrator who'll do recap and promos and puns and more recaps and commercial teasers and more puns and re-explaining what the people on the show just fucking said and more recaps/teasers/puns.
To me, a really interesting reality show was How It's Made. And then Discovery took it off the air for 'MURICAN Guns and all sorts of stupid bullshit "reality" shows.