1.He's not guilty. It's an opinion. He's entitled to his opinion. Just like you could say Luffy actually attacks with string cheese that looks like rubber. You don't have to back up an opinion, that's why we call it an opinion.
He isn't trying to put it into the canon book of Oda, which only Oda can do.
2. Only Oda can state what any of the Haki indicators are. Until he outright states in an SBS, interview, or characters mouths what CoC and ACoC look like, everyone is right and everyone is wrong. Law of Oda allows for all.
3. He kept you entertained for break week, be grateful you brats.