Those nice little lists Spotify helpfully shows are almost guaranteed paid-for inclusion (apart from the chart-style lists, to a degree, but that's another ball game). Labels/Record Companies/Promoters etc are almost certainly paying for inclusion there as it drives huge awareness and subsequent merchandise, ticket etc sales. Much like radio airplay, where the station controls the programming, this is where Spotify gets access to the same revenue stream.
So giving me perfect recommendations filtered through an exclusion list for which, let's be honest, the maths and data science for have long been sorted out via standard ad-tech and e-commerce recommendation engines, is simply not going to aid in the value proposition for a nicely curated list they can charge to be in.