Toxic-logic?

So after winning my lane, stopping three enemy ganks, (Almost getting a double kill twice, but running out of mana each time) I decide to listen in on a toxic argument with the jungler, and bot laners. Took two top towers, and my first tower was at 97% keep that in mind Since I don't know how to get chat-logs:

Jungler: Something along the lines of "Do you want me to tell you why you are retarded?" Referring to either ADC, or Sup.

Me cutting in: "Do you want me to tell you why you should all just stop arguing about this, and move on?"

Sup Sona: "I think Veigar is working with Rammus"

Me: "Um, wtf? Seriously I've done nothing wrong except listen in on you guys.

Sona: Quotes me saying "I feel like my team is low-key toxic . _." They were showing early signs of hostility.

Me: Well not only was I right, but I've still done nothing wrong.

Sona: "You've done nothing you suck!"

Me: "At least I won my lane, and told the jungler to help others by pinging him to you. * As well as get ganked three times, and still not need assistance, and almost get a double-kill from two out of those three ganks.*

Sona: "Sure kid whatever helps you sleep at night.

. . . . . . . . . . [zombie-brand-mindblown]

So I literally had to ping my tower health to her, and she was still in disbelief over my over-won lane. SO! I immediately proceed to teleport top, take the first base tower, and get out just to prove that I can't be used as her scape-goat. The enemies immediately proceed to /ff because Teemo was also stomping their champs in.

What I seriously don't get is why they were even flaming to begin with. We were winning the whole time, and they were just going at it.... [zombie-brand-mindblown] wtf????????