There is more to music than harmony and melody. Some styles of music even don't have harmony at all, like Indian classical music. Or have pitch at all, like some African styles of drum music.

If modern pop doesn't seem to focus on melody or harmony, it's interesting what it focuses on instead. It doesn't seem to be rhythm or form either. It might be the timbres of sounds (interesting singing voice, unique singing manerisms, or difference between clean or dirty bass, etc.), trying to create a unique listening experience on common speakers. There's a reason why physical instruments are used ever less in pop while use of human voice is ever more in the focus.

It might also not be the music at all but instead the lifestyle and drama surrounding the artists. In that case, all I have to say is that there's more than pop and there has never been more amazing music in all styles you can imagine being produced. It also has never been easier to find and access. If you're not listening to it yet, you probably don't care that much about harmony, melody and whatnot.