Yeah it's pretty stupid. If it's a random act of nature that's about to wipe out an entire species, why is warp capability the cut off for helping? Perhaps it was meant to happen even if they have warp technology.

I could see leaving them to destroy themselves if they invented nuclear bombs and hated each other so much they would kill themselves to harm the others, but a supervolcano or meteor or something? Lend a hand dude.

Also I found it very human-centric.

That's an entire planet about to get destroyed. You going to condemn the other hundreds of thousands of species to death because the one intelligent species isn't smart enough?