I will agree it's limiting, but it isn't anywhere close to confusing. The one thing I will say is that some app settings are tucked away in the iOS settings app, which I would prefer them to be in the actual app.
Beyond that, I don't find it confusing at all.
There's always a learning curve going from one thing to another. Like you said, going from Android to iOS, learning the UI and where things are placed may take some time to get used to at first. I went from Android to an iPhone 12 a couple years ago, and it took some time to learn. Same goes for switching from iOS to Android. That being said, it doesn't mean the UI is confusing.