I love violent video games and media as much as the next gal (Doom, ME3, Hellsing as an anime, etc) - but I can absolutely see the connection of trying to work out that pleasure/boredom with fiction.
IMHO multiplayer toxicity is orthogonal to game type, you get that both in "violent" shooting games and also in abstract strategy or card games; harming or griefing someone, or verbally abusing them is a thing no matter if the gameplay itself is violent or fluffy.