Ah, sorry, assumed pulk was an English word, too lol. Means "bunch" or "group" in German.
Are there really "thousands" of those mega titans? Didn't look that many. But I guess if you assume that all the walls on Paradis are made of them, I guess that'd be close. 3000km width total sounds too much though. I guess we'd have to see a map of Paradis and measure it from there.
Found this:
https://i.redd.it/awjpfs4xafb61.jpg
That'd make it actually about 5000-6000km quickly estimating it. Definitely more mega titans than I thought before. But still even that takes time to truly flatten the world.