RE: sulfate as teemo
Today I was accused of getting spells that focus on improving my own score at the cost of helping the team win. One of my spells was Clairvoyance, which is incapable of netting a kill or assist. I had this instead of exhaust, heal, clarity, or ignite, all of which can be popped for a quick guaranteed assist (or even a kill in ignite's case), and also instead of ghost, flash, and teleport, which can get me to KS positions.
The reason he had to make this accusation is to explain why my score was so good when he knew before the first minion wave spawned that I was going to be terrible.
My point is that people who have already decided you are bad will find any reason to explain why you are bad, even after their powers of logic have completely failed to fabricate something plausible.