Sorry, what does testosterone have to do with this ?

It increases agressive behavior. Since "gamers" are primarily young males, being more agressive could lead to them "hurting" blizzard the only way they can; posting non-stop about it on social media, organizing protests, etc.

You might be right, but I think it's interesting to note that the gender ratio of Blizzard consumers is more balanced than is typical in the gaming industry. Still not balanced, but more balanced.

https://www.pcgamesn.com/overwatch/overwatch-female-player-c...

Yeah well I could argue that a sizeable part of these angry testosterone people are Apple users. What stopped them from "hurting" both ?

High school biology covers this. There is an observed increase in competitiveness commensurate with an increase in testosterone, within sexual arousal responses. see reference [46] within the testosterone wiki for whatever that is worth.

That's a reference from 1986. We now know that the increase in aggression is due to higher levels of estradiol due to aromatization of testosterone to estradiol. It's pretty well known that if you give a group of men exogeneous testosterone and an aromatase inhibitor, they will report being calmer and more relaxed.