OK there are 3 possibilities here:
1 - You gained the trust of a severely autistic and socially maladjusted man who thought you were one of his very few friends, went on to Kiwifarms, lied to him that you would defend him, pretended to defend him, then within a day you stabbed him in the back, told him you were doing so and posted more embarrassing things about him to the people making fun of him for no other reason than your own amusement.
2 - You came to Kiwifarms to genuinely defend your friend, then as soon as you got any pushback at all (such as people mentioning his weird piss fetish which you surely knew about), you then decided to flip sides, flushing years of friendship with him down the toilet in order to gain some sort of cred with a bunch of random internet people who you don't know, who don't like you, and have doxed you already.
3 - You are still Will's friend, but you think that by pretending to have turned on him and dishing up more dirt on him you might somehow play both sides, you are throwing your friend to the wolves in order to trollshield and keep the heat off yourself once you sensed that the people in the thread had doxed you and were about to turn on you instead of Will.
Whichever one of those is true, that makes you an untrustworthy, disloyal back-stabbing liar and possibly a psychopath.
You're right. Will isn't a bad person. At least not compared to you.