I think that's a bit unfair Crab - you mocked: "Weight not so critical in a car?" ... which is quite a silly thing to say. If course weight is not so critical in a car [as in a helicopter]. An overweight car can still be quite usefully and safely driven whereas an overweight helicopter either cannot get off the ground or cannot get safely back onto the ground!
But what is worse, is you went on to rewrite history:
You say "If weight is not important in cars" but that's not what was said and quite different to what you said which is "not so critical".
and I don't believe "improve performance" is the subject of the thread; it is "improve safety".
and "and I didn't say it was more important than in helos" - no, but you implied it was at least as critical.