at least after spending a half hour researching how to recover one - everyone says find the url, go to the internet archive and hope.
Youtube has terrible ux for edit playlist (one desktop anyway)
Luckliy I had a google takeout from not too long ago, and I have been using the YT music much less, so the loss was not as devastating.
Questioning whether to allow? Hmm. I didn't know media outlets we're judge and jury...