This article seems like a pretty strong argument in the opposite direction: about a tape format which is effectively unreadable without significant heroics (to the extent that a documentary was made about trying to play one of these tapes.)
The format admittedly wasn't exactly successful, and I imagine more common formats would have better luck finding usable hardware. But even then, the tape still degrades.
If I really needed something to last a Very Long Time, I'd print it in highly redundant QR codes on lots of paper, and then also print the specs for QR codes and whatever other encodings were necessary.
Oh please. Just use raw PCM audio. No one will ever lose track of how to play that.
A 10.5 inch reel of 2 inch tape can be digitized just fine to 16 bit samples, 44/48kHz, 24 channels, most of an hour. That's about 7 gigabytes. So you could back up a huge number of digitized tapes to a dozen different locations quite easily. You could put a thousand of them on a pocket SSD.
If we're worried about being unable to access the bits at all, we should consider etching them into metal or printing them on archival paper. Tape won't reliably last hundreds of years. But for now we can keep bits alive pretty easily, with low but nonzero sustained effort.
If you have a lot of tapes, a dozen digital copies will survive a lot more incidents than the originals, and be a lot cheaper than analog backups along with no generation loss.