Why are players on the PBE generally a lot more hostile than people in the regular game?

I am genuinely curious as to why players who are on the PBE generally don't play collaboratively with other players. I've seen much more flaming and toxicity there, not to mention other players directly ignore your requests to pick a champ for you if you're beneath them in the queue. I've never seen so much blatant hostility in the regular game, so why is the PBE such a different attitude environment?
Reportar como:
Ofensivo Spam Mau comportamento Fórum incorreto