It's definitely a home made and personal distinction but basically for me pop-punk is reserved for the ones I don't like haha. It has a negative side so I needed another term for the (admittedly) pop punk bands that I do like. Again you're probably right, that's just the way I do it internally. And I just use it to describe the sound, Millencollin for example is Swedish. Also there's bands like bad religion that still kinda have that sound but I wouldn't dare classify them under "pop", I'm sure NOFX would take an issue with it too, etc.