There's been a fair amount of discussion in The Cage (and subsequent maligning) of "insta doms" (and the corresponding "insta subs").
To me, both are mostly evidence of ignorance and immaturity, not outright asshatery... though it usually seems to present as such, eh? lol
i have a theory that minority populations, like BDSM, can be slower to evolve in some areas (maybe faster in others?) because they/we have more barriers to overcome?
i can trace my sub nature back to childhood, as young as 5. i had my first crush on a guy at 7. In retrospect, i can see his dom nature and my sub nature interacting even in our immaturity and ignorance. i can see many dom interactions throughout my childhood, many were bullies.
As an adult, i still encounter bullies in the form of "instadoms,' but i have come to view those people as ignorant and immature. i think many are legitimately "dom" (or same with insta subs) in nature, but just ill informed and/or immature. Kind of like the school yard kid who kicks or hits the 'object' of their affection because they do not understand their feelings or how to express them in a way that connects them with the kind of person they want/need.
i think communities like this can be immensely helpful. We discuss, read and learn together and grow in our understanding of who and how we are and who and how those we want and need are.
Meanwhile, it helps me to consider this stuff when an insta dom steps up and kicks me in the school yard. There is hope that he will wander into a class room after recess and learn how to develop and express who he (she) is and eventually find and provide fulfillment.