One thought is that while there may not be much in the way of active decking to be had, matrix perception could still be quite valuable – any tech that is out there should stand out (if they can detect it through the ‘noise’ of few linkages). And if there are others out there with some tech, if they haven’t had to worry about deckers in the past, their security may not be very good. Could even add a moment when getting a message is key, and his ability to fight through the noise to send or receive really matters. None of which makes major use of his abilities, but do give him moments to still shine.
More broadly, a lot of players may enjoy the occasional session where they have to rely on their secondary skills, so long as they know that they will get chances to shine at other times. Just take a look at what he can do besides deck, and give him opportunities. He has high hardware? A key piece of equipment that they are given (or scavenge) is flakey and needs repair to be more reliable. Has first aid or medicine? Helps keep them mobile after their shortage of survival skills results in them getting sick (bad water/mosquito born disease/poison snake bite/etc.)
For that matter, look at his negative qualities. If any of those would be particularly challenging, play it up – dealing with your negative qualities is still a play challenge and spotlight time.