They have no desire to improve because they are failures at life, so they seek to drag others who are better than them, down to their level (via various means of bullying or shame tactics). Alternatively, they screech and screech and screech at people to give them free shit, special privileges or attention.  Because the vast majority of normal folk just want to live their life, and not cause conflict (or alternately don't want to be assaulted, doxxed, their life ruined or just be sit on by these hamplanets), they either give in to their demands, or they do nothing. To mentally ill fuckwits like these cunts - doing nothing is carte blanche for them to steamroller over others' personal boundaries. To someone who has no concept of the fulfillment of personal achievement (if they did, they wouldn't have let themselves get to that size in the first instance), they have no shame or any concept of personal embarrassment (unless someone calls them out on their shit - in which case they fly into an apoplectic rage).