So why don't you just instantly warn/suspend people who are a jackass to you just because you're a Rioter?

I figure being a dick to the developers to their face for no reason other than they're the developers is kind of a sign that they're not a very good person, and should probably carry some punishment.

Or do only the Rioters in charge of player behavior (ex. Lyte and the people who work for/with him) have the power to insta-punish someone after a game?

I honestly like a little bit of trash talking. When im doing bad and someone trash talks it makes me want to do better and prove them wrong. Its part of the game that I like sometimes I may say some things that others do not like, but it just enhances my experience even though I understand for others it may hender them.

I thought Rioters had their own personal accounts to play on if they wanted to

RIOTers can choose if they want to tag their name or not. Not having a tag allows you to experience the game much closer to what every player experiences every day, which is a very important aspect.

Now recently I decided to tag myself as I am setting up more and more ARAMs and try to offer myself up for the carry a rioter to your 1000s win challenge, which is just a whole lot easier with RIOT in your name. ("R u rly riot?").

I would most I play are equal or maybe even enriched by being known as a RIOTer. That does not mean its any easier as it appears in almost every game I play I have a huge 100 feet target above my head. Couple this with my pretty bad lane awareness and overextending its a receipt for repeat gray screening failure.

There are games where some are players are very vicious, not really bothering me to much in most cases. If this is really bad I just do what every other player (including rioters) do and report them at the end of the game. BTW our reports carry exactly the same weight. If we come across extremely toxic players we have the ability to get our epic player support people to go investigate and deal with it to protect other players from the individual.