Gstaad Guy — who keeps his real identity a secret — began making a name for himself only a few years ago in niche social media circles by parodying the lives and tastes of the ultra-rich through sharp, satirical social commentary delivered through fictional personas: mainstay character Constance, an old-money British aristocrat who peppers his conversations with French and Italian and dresses head-to-toe in LVMH’s “quiet luxury”…