Defending yourself isn't wrong.
That defending yourself is actually a good thing. If four people are flaming you, it is better to mute and move on but sometimes 4 people flaming you just gets to you too much. Blaming victims who defend themselves is why Riot will always suck. To scale up the analogy, if four people started beating me on the street, and I sent them to the hospital, riot would have no self defense clause. Meanwhile the thugs roam free. I have rarely said a word to anyone who didn't start it and I disagree with Riot on a core level and I know I'm right.
You've lost a customer, as well as taught me a valuable lesson, justice is blind and so is your company. I can still count this as a win though, because I won't be wasting money on your game anymore and have the opportunity to put my free time toward better endeavors than your "esports" milk machine.