I couldn't go pop if you put a firecracker in my mouth

Randy Travis
Everybody wants a definition ... why not just look at the charts?
FWIW, I think technically whatever currently generates hits is pop music.
And generally irrespective of genre those hits nowadays are more, but not totally, based on loops and electronica, etc. than pop music from a decade ago.
And again, FWIW, to my old ears pop can range from engaging to awful...but I felt that way about it 50 years ago

Bud