love how the mods say...

The "insult" was based on demonstrable facts and was used not as an attack on Tyler1 but to make a point that goes well beyond that. Could they have used a more neutral description? Sure, but the specific word is used as a reference to Riot's often used summary of the Summoner's code: Don't be a jerk.

I don't think I've ever seen anybody get a post removed or even edited on the forums when the insulting part was this heavily supported by the context.

Do you have links to show, or are you just trying to slander the Moderators by falsely accusing or paraphrasing what they might've said?

Some insults are true

If you are talking about Boards moderation, discussions about that belong on Boards Feedback.