You might as well call the ignore button the "I accept that I actually get mad about what someone says on the internet" button. I mean come on people, it's hilarious to me you're getting upset about what a guys who's ID is "Trash Can" is saying.
Not really, I would think of it more as I don't want his trash cluttering up my forums than getting mad about what he says. I haven't banned him yet because all he is doing right now is trash talking a game, which is certainly within forum limits. If he ever pushes it beyond that then he's out of here. I would rather have Kachi's naysaying than his, I don't feel good about even putting them in the same category because they aren't really. Kachi can form constructive arguments and converse in a civil manner, Poubelle simply has sewage spilling from his keyboard and if you come up with a good counterpoint he just ignores it. Apples and oranges.
Also, in his defense, as you said I believe Kachi presents valid arguments. While they may not be what we want to hear, sadly SE doesn't have many legs to stand on given it's last several numbered FF releases.