Seriously, for non-structural parts like fenders and sidecovers and seat pans etc., I see no benefit of using metal over plastic. Plastic will not rust, will not corrode, will not easily dent and usually weighs less than metal parts. Which is why BMW used plastic fenders and side covers and more from the late 60s on their motorcycles.
Though I agree with you intellectually, there's something emotionally satisfying about metal on a bike. Call it a nod to the past, I dunno. It gives me warm and fuzzies.
That said it's arguably ridiculous as you point out.
So what's dumber, metal bodywork on these bikes or the carbon fiber on my Carbon Dark to save all that weight over plastic.
