> Fair Use always trumps the DMCA

This is not necessarily the case.

> However, in a number of cases involving DVD decryption courts have held that there is no fair use defense in circumvention cases. In Universal City Studios v. Reimerdes, 111 F. Supp. 2d 294, 322 (S.D.N.Y. 2000), the court stated that "[i]f Congress had meant the fair use defense to apply to such actions, it would have said so."[5]

https://en.wikipedia.org/wiki/Anti-circumvention#Fair_Use_an...