I don’t know how widespread it is outside of metal, but I’ve been seeing more and more bands offering tapes. Sometimes a release is only on tape, other times the tape might be $6, the CD $15 and the LP $25, so there are different ties available for those who want a physical copy. I probably got 10 tapes or so within the last year.
An error message you can get if you really manage to mess things up. I got it once a few years ago.