I believe "paganism" is primarily applied to polytheistic Gaia-centric belief systems. Buddhism is polytheistic, but does not have a god of the skies, a god of the seas, a god of lightning, a god of beasts, etc. as most of the Indo-European pagan systems had (have? I am assuming that there are no unironic pagans, and those who claim to be are just edgelord atheists with a bit of stubble below the jawline).

Islam is a sex cult built around a scaffolding of stolen Judeo-Christian myths, adapted to fit Mohammad's need to get his dick wet and keep it that way.