I do call that progress. Just as much as you harp on 0-60 as not meaningful (you are of course right), weight taken by itself is equally meaningless. Porsche just took a page from the Vette. Gear it to death to get mpg. I do not see the issue. Cheat however you can.
If a heavier car gets better mph, makes more power, corners better, stops better, goes faster, has more room, then I really am not seeing anything to bitch about.
Every report says the 991 is the greatest driving Porsche ever made.