If one has seen the problem and seen those not having the problem the difference is striking. I believe their are many 95 cars that will never have the problem plus there is no real way to tell if it has already been replaced on used cars.
I have seen many of the problems and so far have not seen any consequences. Most MB controllers are current protected against output shorts. Software sometimes gets scrambled but is usually correctable.
If it ain't broke...don't fix it!
BTW, the job is very easy. I would think within the grasp of even the beginning level DIYer. Here are the problems: disconnecting proprietary connectors (simple if you have been there), dealing with codes or adaptations miscreated during failure and reassembly, and dealing with the concept that you didn't get it right if things don't work when back together. A lot of risk of decision but not much real risk.
Bosch Master, ASE Master, L1
33 years MB technician