The word "toxic" used to describe rudeness on the internet is amazing in-and-of-itself. This is the same word used to describe radioactive nuclear waste, or deadly poison. It's part of a long-term cultural project by the "manners police" to combat internet rudeness, so what's happened is that the descriptive rhetoric about rudeness has been ratcheted up to 11.
There's a major problem when the same word is used to describe a mildly aggressive or rude tone that is used to describe GamerGate (by it's opponents, no less). GamerGate is a fascistic cleansing process, of progressives and anyone allied to it. Conflating it with mild rudeness is a severe degradation of the meaning of language.