Why are the 80s still considered the low point of Dylan’s career?

This is the decade in which Dylan wrote songs like Jokerman, Blind Willie McTell, Most of the Time, Man in the Long Black Coat, Dark Eyes, Every Grain of Sand, Licence to Kill, Born in Time… not to mention his work with the Travelling Wilburys. Sure he produced a few duds, but he hardly hit rock bottom!