Because insulting Nintendo first party games is blasphemy among a lot of gamers. Although they have no desire to buy a Wii U or ever play Mario 3D land, all the fond memories of their childhood are inextricably tied to Nintendo mascots such that to criticize games like mario, zelda, donkey kong, etc. is tantamount to criticizing themselves.
Their whole sense of self would fracture as doubt overcast their childhood, it would be like heroizing your father, only to discover in adulthood that he cheated on your mom, murdered the neighbour's children, and was BFFs with Osama Bin Laden. In an adult world filled with disillusionment, greed, and rampant corruption, people need to believe in something that once was pure. They need to hold on to their innocence.
They just can't face the truth that a lot of those games just aren't resonating with people, sadly because they're just not that good.







