1) That thread is from 11 months ago, and I asked every single person to pull up a single instance of toxicity, since 95% of my games are recorded and it would be extremely easy to do so. What a surprise, nobody did! In fact nobody ever has in the 11 months since.
2) That AMA was going fine (ie we're actually talking about Leona and sharing knowledge) until some random Reddit circlejerk started going. But sure trust Reddit -- they've never been wrong before!
Weird how it's ONLY /r/leagueoflegends that says I'm toxic, and not /r/supportlol, /r/summonerschool, or any of the other subreddits that aren't filled with twelve year olds and Lord Newts.