Whichever comment they think likely contributed to the ban? As it stands we’re basically being asked to take their word that their ban is unjustified, and they absolutely sound like the kind of person who’d rightly get banned under rule 3.
By their account, they were banned for disagreeing with the core argument being made ("For the record all I did was disagree with their bullshit.")
Maybe they’re not, but if this was a petty or absurd ban I’d expect to see more petty or absurd bans in the same thread given the large number of pro-Mamdani comments.
The entire point of a petty ban is that someone is banned because they irritated the mod or one of the mod's pets, not for violating a consistently-applied rule. Sometimes it's by pushing back too hard against the mod, other times by hitting a soft spot or using an argument the mod doesn't like.
Considering the remaining pro-Mamdani comments are pretty 'gentle' in their defense of Mamdani, I would be unsurprised if the ban was legitimately petty.
For that matter, calling support of Mamdani 'liberalism' (which any disagreement with the meme would necessarily include) is... questionable.
And how predictable, my most dedicated stalker, Eugene V. Debs Ghost, came to see me.