How is this "absurb?" . . . why use a feature that require Needs, and be able to ignore your Needs when it isn't convenient?
The fast travel limitation actually makes a great deal of sense, since time passes while you fast travel . . . so you are limited to distances that are within your Needs range (so you don't die because you went too long without drinking any water). All you have to do is break up your long trips, and take care of your Needs between jumps.
Time spent in the game (from the player's perspective) is irrelevant. All that should matter is that the game account for the approximate time the PC would take to reach their destination; It should pass more time on the game clock for a crippled PC; and (to impress) should increase the chances of a random encounter (which bizarrely do not exist in the game).
***Edit... While I don't like that idea... I do think its been my mistake ~we are talking about two different aspects. I am describing FT's removal while the PC's limbs are crippled. The Fallout series [always] had dehydration damage, as a minor aspect, but there's no need to have it as a major game mechanic ~too insignificant (IMO).
****Edit: Instead of a travel limit, I would greatly prefer that the PC handle their own business while trying to get to where I've selected on the map.