Is the Hydrogen Energy Level Formula Truly Degenerate in j?

[copernicus1]

Griffiths writes that the formula for the hydrogen energy levels taking fine structure into account "breaks the degeneracy in l" but "still preserves degeneracy in j." I'm confused by this, because the formula he gives (Eq. 6.67 in the textbook) depends on j. How can the system be degenerate in j if the energies depend on j?

 

[mfb]

"The system is degenerate in j" = "different states with the same j have the same energy"
States with different j can have a different energy, even with the same l.