I think he is an example of "main character syndrome". These people live in the digital world through their social media sites and other people exist as a supply of attention. Main characters tend to have rather oblivious attitude towards etiquette and decorum because real world social life comes with demands of respect, consideration and reciprocal model of interaction. And this is diametrically opposed to the principles of instant gratification, instant fame, instant achievement that rule in the virtual world.
Gross and tasteless. But many are nowadays like him.