I think that is an overly bleak view. An interstellar civilization is likely on a similar evolutionary ladder spot as us and I would imagine that they would recognize this. I don’t think that there is much difference between us and them in that scenario, except how far we have developed our idea space. Supposedly with the help of such a civilization we would be able to accomplish the same feats as them in a fairly short time. No monkey is going to engineer rockets, no matter how long you try to teach them.
The difference between us and a mouse is only 50 million years. The difference between us and a smart ape is maybe only 200k years. Now imagine a civilisation that has been around for 1 billion years. And then apply the same exponential growth curve that life and technology have on earth. The distance between us and them could be absurdly huge.
Humans aren’t exactly good at not going to war and threaten nuclear warfare with itself.
I agree we should be, but it doesn’t have to make sense.