Bones McHorror
bones
You've pretty much summed up Katy Perry's whole career.
I need to keep abreast of modern stuff for the DJing but, truly there's maybe 3 or 4 songs years on year that I know DJs will still be playing in 10+ years time, the rest of it is disposable music by numbers. I watched a documentary a while ago about Max Martin and his crew who did the tunes for Britney Spears etc... and they literally worked out a formula for writing songs (it was a pretty interesting documentary btw if you can find it) and now we've got to a point where algorithms are being brought into music.
OK ABBA had a 'formula', Elvis had one but it's a far cry from the cynical way modern pop is written and produced in my opinion.
Every single style of music can be reduced to a general enough formula of some kind. That's music theory. Generally it is good knowledge, but not actually useful in the paint by numbers sense. Because you end up creating something that doesn't quite work if you don't break some rules.
When I hear white guy blues jams.. it usually sounds more similar than playing Max Martin songs back to back.
I feel like if you only keep abreast of DJ music, it is not quite keeping abreast of the entirety of existing music, even pop music. Since not all pop music is made for weddings and corporate events and stuff like that. Often times that requires intentionally the worst cringe-y music. To say nothing of the rest of the output of modern music.