well it's because they have no life and they became reatrded, but yet, somehow they think they have a life.
Some people just become Anti-Pokemon Losers from a Personality changing desease (well it's not technically a desease, I just think of it like that because it seems like most people completly change personalities around 6th to 9th grade and it causes them to act as a whole differen't person and it also causes a lot of people to sadly lose friends in the process) that most people in Middle School get, from being a followier and following other Anti-Pokemon losers (This is sadly how my brother went to the loser side

), they got mad because they couldn't get a certain event only Pokemon so they just started hating it or just because they ae just plain retarded losers that were born that way and will probably always be like that.