the MJ is still easy, it's just... different.
the truck cannot be in 4wd if the handle is in 2wd (assuming the linkage underneath is working properly of course). the light only tells you about the state of the CAD up front. and if it is indeed stuck engaged, that's not 4wd. just 2wd with an engaged CAD. later XJs just got rid of the whole thing and put in a one-piece axle in it's place.