The submitted article doesn't mention it but my guess at connecting the dots is that it's related to EU Article 13's stringent requirement of "upload filters"[0]. Yes, Spotify's direct uploading "gave opportunity for small artists to share their talent" -- but that same mechanism also made it too easy to upload copyright infringing content. Since Spotify does not have a machine learning AI copyright filter like Youtu…
Yes it's possible that Spotifys decision was influenced by GDPR, it's also possible that the decision was only done because of it.
But since Spotify hasn't said so, blindly assuming that GDPR is at fault is incredible dishonest.