I think it’s more the older guys like the older stuff. We grew up with it, choose to spend our hard earned money on it, and our friends feel the same way.
Nobody is saying the gen 3 isn’t an excellent piece.
I would rather have my 69 Dart to drive around and race, than I would a Hellcat, and it isn’t even remotely close.
Some people feel differently, and that is fine with me, I am glad the hobby is staying viable with the “ new” stuff