I don't judge anyone's fandom, personally. If you are here (consistently and in a non-troll fashion) you at least have some rooting interest in the Penguins and therefore are fine by me.
Some people are just kinda like Eeyore. Ha... at least speaking for myself. A bit hard to take sometimes but their heart is in the right place.
The negativity can get overwhelming sometimes but that also largely comes from a place of concern, worry and therefore deep-seated investment in the team if they can elicit those kinds of emotions.
Anyway I'll get off my armchair psychologist high horse.