This confirms my suspicions. I used to use spotify a lot from 2010-2015. Around that time I started to buy CDs of the music that I really liked. This mean that

This confirms my suspicions. I used to use spotify a lot from 2010-2015. Around that time I started to buy CDs of the music that I really liked. This mean that I was finally getting legit high quality copies of stuff I had already. It was then that I noticed that certain, more obscure albums on spotify had the same corruptions and odd encoding artifacts that my non-legit copies had, but the actual CD didn't. (sometimes the rips were shit, some had CD dust skips, other had other corruption type errors) So it makes sense.