From what I've seen just messing around, soloing, duoing with THM friend, spiritbonding parties etc. Yeah, CNJ can still DPS decently. Usually I cast the ELM DOT spell that matches my wand and then the Elemental Tier 2 nuke that matches and/or chainspell+AM that matches (as timer allows). If I can cast more, I alt on a complementary ELM DOT/Tier 2 etc. Until mob is dead. Works pretty well and damage is on par with THM. (This of course is my CNJ spell only setup)

Some argue THM's Shadowsear is best Damage spell currently ...and it is BUT it has a long timer...AM's and Tier 2 Elm spells can out damage it when you consider damage over time. But even still, just because Shadowsear wins doesn't mean CNJ can't DPS decently. ...at least at the current moment.

Keep in mind, just for fun I soloed Phaia as CNJ....I had to sleep it and rest once to regen MP...but I did it. So yeah, CNJ can still damage deal just fine.

Also, other than in some very specific instances, CNJ is still the Healer when it comes to Events/Harder group content etc. I wouldn't suggest going into Ifrit for instance as a DPSer.