This is a re-posting of the original idea posed by cphilippsen in 03.2017.
The discover weekly and Release Radar are broken. I liked several cover songs and now it seems like upwards of 50% of the songs recommended for me are low-quality or poorly-executed covers I have no interest in whatsoever. If the discover playlists are only updated once a week, It is a disservice to everyone to have to deal with these unwanted covers.
The idea for implementation is as simple as "Only allow original music" toggle switch. Unfortunately, this would take another layer of data for all songs. Another idea would be as easy as blacklisting songs containing the phrase "cover".