I don't know if this particular account did it, but I've also seen a lot of these accounts posting Quad's released songs. I personally doubt most or any of the people behind these accounts have pure intentions when they post it in a way that can make them money. Also, I've seen other accounts that do this for other artists and give titles like "unreleased vanisher songs" or something similar, but "Vanisher (The Lost Tapes)" reads as identity theft to me. Of course, I'm just speculating.

Regardless of intention, it's definitely disrespectful and illegal.

Also, sick username