Sometimes, the right way doesn't work when you try to tell that person, but he or she doesn't get the message or the hint. For incidents like this, being a blunt asshole is the only way to get across to them.
While I don't know of
@Hunter's previous interactions (if any) with
@ComicMaster148, I do know from first hand experience asking about KOR DSiWare Seedminer theoretical stuff, that the only time he is like that is if you're wrong about something AND being incessantly stubborn getting your facts straight.
A lot of the old time, knowledgeable members here are generally nice people with good intentions, helping out many 3DS users with all sorts of different issues. Unfortunately, there are occasions that a newcomer decides not to heed their instructions and advice... When that happens, a person in Hunter's shoes would be a bit miffed and may feel the need to say something. And act on it.
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Then again, I suppose if you're at that point, you've been here too long on GBAtemp forum. It's good to step away from the keyboard, go outside for some fresh air, eat a real Mexican taco instead of frozen dinner, and come back inside when the sun sets, and the mosquitoes start to bite.
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Ah yes, what he said was jerk-ish, but you now (probably) know the sentimental and the reason why he said it that way.