They're still usable.
The console crafting assignment remains unchanged and the Infuse Artifact mission uses the new rare crafting materials instead of particle traces.
Don't know if NADORC is still available
I just found NADORC in Beta Ursae, and NDORC in Alpha Trianguli with a newer character, so the entire Childrens Toys chain is still available and working.
No they've become obsolete. While you still seem to be able to do the missions you can get all the gear elsewhere (crafting + fleet) and in better quality and without the RNG.
Comments
The console crafting assignment remains unchanged and the Infuse Artifact mission uses the new rare crafting materials instead of particle traces.
Don't know if NADORC is still available