All aluminum, mid engine design, hand built, design and handling input from arguably the best F1 driver of all time, motor revs to 8000 rpm, limited production ultra rare, as capable or better than most exotics when it was released (including Ferrari), revered in its country of origin. All this in showrooms in 1990.
Yes, it is an exotic.
And lets not forget, Jeremy Clarkson said it was a supercar. That's a stamp of approval right there.