Anyone else notice the *slight* detail mistake?

I will blur the specifics in case some people don't want to see it.

Aerwiar is supposed to be a world without electricity, nor gunpowder.

But near the beginning of chapter 3, Podo is telling a pirate story and mentions cannons. "I tell ye! That was with the Skreean Navy hot on me stern, cannons firin' and arrows whizzin' through me hair."

A small detail, but a curious one nonetheless.

Also, one other cross-book detail that doesn't quite match:

Podo is called 'Scale Raker' in book 2, but in In the Deeps of the Dragon King, he is called 'Scale Rider'.

This might be just author error (Peterson didn't write Deeps).

Edit: Something called 'spark powder' was apparently used in the TV show for 'pop rockets'.

Nothing is ever said in the books about gunpowder except for this instance. However, I'm pretty sure Andrew Peterson had an interview where he confirmed that Aerwiar has no electricity or gunpowder. Don't remember where, but I know I've seen it.