It's not an interpretation, it's a fact: CPL requires some kind of PPL as a qualifier, exams, hours, a CPL course and test. Where you get that PPL from is irrelevant. The problem that arises is that the cheapest way is to get everything done is to finish with the CPL at 200 hours, which means getting the IR between private and commercial: you can't hold an EASA IR without a licence to hang it on. In this case you would have to get an EASA PPL.