Riots Punishments are questionable

So, today i had a Draven who ran it down mid after 7 minutes, after he called everyone trash. He just straight inted the game and lost it intentionally, so i was a little bit toxic about, because i had 3 inters in a row, so i flamed him. Now i got a 25 Games Chat Restriction, and im asking.... Inters arent getting any sort of Punishments, but if you say a word against people, who intentionally waste ur time and lose for you, griefing your last little piece of fun u have in league of legends, you are getting punished? What is the real deal?
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