I don't think it will be safe to pick their rock bottom moment until not only have they called it a career, but Lars and possibly James have passed away. Considering they not only recorded this album, but seem to be proud of it, I have no doubt that their deep self-delusion could allow them to commit musical atrocities on a far grander scale than this.people are declaring this as Metallica's rock bottom, completely ignoring the collab they did with Ja Rule
Seriously, just wait until they think it's a good idea to "re-interpret" Master of Puppets for a new generation...