I agree the early 70s was amazing and it was the diversity of popular music impressed me. Today pop music tends to follow a similar path. For a while everyone sounded like Ariana Grande, now it's Taylor, Olivia Rodriguez, etc. BUT the diversity is still there but because of no record companies, artists put their own music out, there is not nearly the clear path to expose the masses to this new music. You must hunt now.
Anyone listen to Holly Humberstone? Or Missy Higgins from Australia (she's been around a long time)? Or how about Jacob Collier?
Brad