CDJ-3000 are hardware unlock. 2000nxs2 and earlier arent. Neither are any XDJ-1000.
Makes no sense to include 3000s and not the older models but you’re also not likely to use those in performance mode on any of the above models - just to manage the library and make USBs really.
Full list of hardware unlock here.
If I had CDJs and wanted to activate hardware unlock, I’d rather buy a used RB-DMX1 for automatic lighting control or DDJ-XP1 / DDJ-XP2 for DVS control (so you can run turntables but use rotary knobs and buttons for controls and efx off to the side). Then I’d have some benefit, and not be paying a subscription. I already have the above kit but the XZ unlocks it anyway.
There is also a Pioneer Interface 2 that creates DVS capability where a controller or mixer didn’t already have it.