"Did the developers foresee that some people will kill their crew members by mistake?"
Uh... let me put it like this: I think it's not a bug, it's a feature.
I have played FTL once, didn't find it to be very good. Maybe I just had not enough catastrophies, because I reached the goal.
Haha! I only got to it because it was recommended by me a lot. From what I tell the game feature a lot of randomness so maybe you got lucky?