Is Holding Your Rank Above Someone In-Game Toxic?

I recently played a game as support Teemo, admittedly a bad pick but I did go positive at 6/4. However, not once did we get any help and our junglers reasoning was that we were bad (premade 3's) and that's why we'd never get to the holy place known as platinum like him. Obviously I got curious and checked out his stats (below). Now I wanted to ask, is it considered toxic to gloat your rank above people and act like you're better than them. Some people would look at it as advice like "Don't play teemo support or you'll never get better" but this is in a normals with my friends trying to have fun. He also clearly said "I also have someone spectating that's special, wait for your ban" (referring to Riot themselves?) Despite having a name I'd personally consider against the ToS http://postimg.org/image/z8r72gisf/