Personally, I just pirate the FLAC files from RED, and play them with VLC. Several advantages to this:
Spotify is owned by a shitty, greedy company with shitty, greedy practices.
Spotify enforces DRM on almost all its media.
FLAC files have superior quality as they are lossless
I can play them offline without a subscription
Downloads are pretty much instant, as private trackers have insane seeder to leecher ratio
I'm sorry if this isn't the response you're looking for, but as other people have already given recommendations for alternatives, I thought I would just give my 2 cents.
What exactly do you mean by "a single point of failure"? Do you mean that if the tracker goes down, I cannot pirate more music?
How is that different from Spotify? Does Spotify not have "a single point of failure"? At least with RED, I keep all my FLAC files even if the tracker gets busted.
The carefully curated library on the tracker is a lot of effort that can be destroyed very quickly as evidenced by the fact it has happened before, yet people still use private trackers.
But I don't need the entire "carefully curated library"? I only need the music that appeals to me, that is, the music I've already downloaded and seeded. Even if the tracker goes down, at least I'll have access to the files I've stored to my local storage.
With Spotify, unless you paid for Premium to download the songs, you don't even have that guarantee. If the service/your account is gone, you lose everything.