When I took the 4/4 to the garage for the first time the mechanic greased the rear propshaft UJ but couldn’t reach the front one. Previously I have always greased my own UJs on other makes of car when they had nipples but wondering if truly required?

Many long years ago I had a Ford Escort Mk2. It didn’t have propshaft UJ nipples and did over 110k miles without a problem.

Thoughts?