There was an "actual discussion" right at the beginning. Dude asked something, Belgium explained. End of discussion. But since guy insisted on looking for vile meaning while where there is none, he got ridiculed.
Actually my question was not answered, but avoided. Even if you insist that the emote is just funny, nobody cared to explain how a written reference to "Heil Hitler" and xenophobic slurs are fine to use in Twitch chat.