I'm not certain the smily can diffuse that rather loaded comment.
You are completely missing the point here, probably on purpose. The male character you chose to highlight is dressed only in skivvies, yes. But he is not wearing an outfit because he is a base character, not because the skivvies are considered a costume. He also does not have an absurdly large "package". The artist even said that he wouldn't show the female base character (presumedly in skivvies and bra) because it would be problematic, so we have nothing to compare him to.
The female @KatsPurr referred to *is* in a costume. A costume specifically designed to highlight her boobs. It is not the same as the male version of the desert costume, nor is it practical for protecting oneself from zombies. It's an outfit specifically designed to make her look sexy- short shorts, bralette, and a few token pieces of armor. Not cargo shorts, t-shirt and armor bits like the male outfit has.
The point is that the artists and devs came off looking like dudebros by doing that, rather than like professionals who care about all of their players, not just the 14 year old male players.