Yes as a collector you don't have to understand the production and don't have to understand the figure as this should only concern hot toy and not the collectors but if hot toys cannot make a figure that satisfy you, collectors should simply not buy it and why complain on a point that realistically cannot be fixed?
Did hot toy cheat you and show you a much more muscular body at proto stage to trick you into ordering it? If not, then why do you order it in the first place if you think the body is too skinny?