Oddly enough, that convention isn’t universal. Top-to-bottom is typical in the US, UK, and Commonwealth, while bottom-to-top is common in continental Europe and non-anglophone Americas.

Excuse me, that was Finn’s right arm.

The comic was released the day after the election, by an author who lives in the United States. I suspect the comic is explicitly about American politics.

You need to sleep.

Did you know they don’t even believe biggest rock is best rock?