A tweet from lawyer Barry Sookman (who has also blocked me, BTW), referenced an article with Further Copyright talk. At the end the author, Todd, said:
So is circumventing a TPM (even for legal purposes) like going into a theatre without paying or taking a book from a bookstore without paying? Or is it like being able to photocopy the relevant sections of a book in a library? To me it seems more like the former than the later.