I'm pretty sure Medium at one point was a decent low level solution to the problem they set out to solve - it just doesn't scale to the multi million/billion dollar solution the founders wanted.
I've found more recently that the discovery playlist that I also loved is churning up more and more of the same stuff now. Not even a good mix of songs from artists I definitely like - just a very small set of songs from them.
I do love it though, generally speaking although being a heavy daily user I'm not sure the discovery part is actually as good as it initially appears.
I think there's an element of them forcing an entirely new Google standard (then favouring it in their results) on to something they could just as easily punish (slow sites) directly.
Slow sites can be sped up quite often with small optimisations and improvements and those improvements can be guided by Google tools but instead they're forcing their own new format in the name of speed.
Isn't Facebook's MO that they do basically whatever they want and when called out for shady stuff they issue some sincere apology and try again?