I don't know what diegeticalt responded to the troll, but is "shortstack" even an insult? Given the context, I don't think OP has any actual problem with the other person's appearance.
I'd be happy to be corrected by other comrades, but I'm pretty sure "cracker" is far more derogatory than this, and the lack of terms like "derogatory" or such in the Wiktionary entry for the former seem to support my suspicions.
/gen
I don't know what diegeticalt responded to the troll, but is "shortstack" even an insult? Given the context, I don't think OP has any actual problem with the other person's appearance.
I'd be happy to be corrected by other comrades, but I'm pretty sure "cracker" is far more derogatory than this, and the lack of terms like "derogatory" or such in the Wiktionary entry for the former seem to support my suspicions.