This has been an ongoing problem for awhile now. Not sure how their algo's work, but they are definitely broken.
I saw an instance where a guy had a law app, a language app, and a music player app, all totally different. Fall under the 4.3 rejection.
Also once you get hit with a 4.3, your account is automatically flagged and youll get an autorejection with no explanation past the boilerplate.
And yes, if you publish an app that has intellectual property or copyrighted information in it that does not belong to you whether you have authorization or not, it requires the rights holder to have an account now.