The obsession comes from people who wanted a Jetfire to look like the way he did in the comics and cartoon. Marvel/Sunbow had to draw him in a more boxy way obviously to avoid a lawsuit from Harmony Gold (Robotech). Classics Jetfire combines the aesthetics of both the original toy and marries it with the Marvel/Sunbow model in an attempt to please both fans of the original Valkyrie-based toy, and fans of the blockier comic/show model.
I think the cleverness of the toy is that its G1 homage works on two levels like that. Even moreso with the Henkei repaint as the colours are more like the cartoon, yet the helmet has a red visor like the G1 toy (and they even explained the blue eyed robot and red visor mask thing into Henkei fiction

)
If you're looking at it from a "Valkyrie purist" (for lack of a better term) POV, then I can see why you wouldn't like it as much... but the toy is attempting to walk the middle road and try to appease both camps. And I think in terms of that, it's well designed.

My only complaint about it would be the clearly visible hands in jet mode... otherwise I'm pretty happy with it.