As a music writer, and music fan, I do spend time analysing and considering the changes in taste, and the reasons for it.
Comparing modern pop with the sixties and seventies is about as valid as comparing a cloth hankie with a paper tissue - they both do the job, but one lasts better than the other.
Pop has never been designed to last, or be meaningful.
The two major differences between then and now is that millions more people bought records then, and music was part of the fabric of their lives, and now it is simply in the ether, and not considered important, or a soundtrack to growing up, which is why we will always remember the music of our youth, and today's youth will remember little if any of it at all.
It's easy to dismiss today's pop as samey and throwaway, but that's what pop is - it's simply built and delivered differently now.
Decades ago, pop stars wrote and sang their own hits, and toured them - today that job is done by schools of producers who construct a track from computers, and find an anonymous voice to front it.
There are exceptions of course - but the Top Twenty is now in that mold, and likely to remain there for the foreseeable future.
We can only embrace it as our children do, or ignore it and grumble about it as our parents did.
Pop moves on - which is why we no longer think Mantovani and Jim Reeves are hep cats, and amen to that!