As someone who speaks German alright (lived there awhile and studied a few years in school) gendered nouns and all of the versions of “the” are just stupidly laborious and I never cared if I got it wrong. Even if my accent was okay (it wasn’t okay, my US German teacher was Danish and I was sometimes told I sounded Danish) my lack of fucks about der, die, das, dem etc made it very obvious I wasn’t a native speaker.

All of that said, I found that popup kids book pretty easy to read.