Most protags are meant to be self inserts, characters that views can relate to or project themselves onto. This is one case in which the self insert character meant to represent the average viewer, actually looks like the average viewer. but it ends with looks, if they really wanted to have him be assosiable with the stereotypical fat otaku, this guy wouldn't have friends, at least not normal friends.
fat ugly people like him don't get friends like that, they get other ugly nerdy losers for friends.
but to be fair, it is possible for pretty people to be friends with ugly little trolls out of petty, which this seems to understand a little, making him distrustful. but at the same time, that distrustfullness should have made him not install the program. I don't know how things would work in the near furture of japan, but when the most popular and pretty girl in school invites a fat loser into her little social group, it's usually to pull some huge prank on him in front of everyone. he had no clue what he was installing, it could have been a virus program to make him humiliate himself for all he knew.
but I guess that wouldn't have made for a very interesting anime if it ended on the first ep like that...
It's kind of blizzard how this whinny fatass has these girls all over him. but I guess in the future girls don't care about looks or money or social status or personality... no, what they really want is someone who's good at playing racquetball online while dressed as a pig.
also, fat people don't smack away food being presented to them by cute girls like that, he didn't exactly get where he is by turning down food.