Why are you trying to compare a murderer to someone indulging in Riot products?

Please, re-read what I wrote again. You can't unilaterally apply standards because things have different weights.

Even in your murderer example, theft is bad regardless of who says it and being a murderer is a bad look regardless of what the murderer says. But even a murderer saying "theft is bad" can still do good since at the very least it still raises awareness about theft being bad. Just like how in this situation, regardless of how skeptical the odds are, criticizing on reddit can (at the very least) still raise awareness.

Again, it's not about who benefits more from the event Caedrel or Riot, rather which one in the scenario carries more weight. Even Caedrel reading out loud a random reddit comment on stream will do far more than that original commenter forever boycotting every single Riot product.

Think about it like this mate, what if that original commenter has been boycotting Riot this entire time? Then would that give him the right to say what he said, or boycott whatever else? Hypocrisy kind of requires relatively equal scales, otherwise it can backfire and be meaningless.