I personally think that wondering if an intubation may damage the vocal chords that has been surgically shorten, is in fact a wrong question for a non existent problem.
The last 80 years history of body part transplants coming from the individual himself or herself also called auto graft, has shown that once it's connected, it's connected. For the grafts or broken bones once they are repaired, are actually more stronger than before (to be short over production of calcium, to fix the injury)
For the soft tissus, flesh tendons and so on, the healing process is slower than the bones (that's why for every surgery performed anywhere on the body, the complete stabilisation is set between 6 to 10 months depending on the individual ), but the "soldering " of the 2 or multiple parts that has been put together, the cells, the tissus are so bind together on the cell level, that there's nothing to worry about.
Thinking logically why Dr Kim is using a permanent suture, where other surgeon or Professor (Remacle) are not, can be justified to insure him (and the patient) a plain and radical solution to make his surgery successful with little hassles post op (i.e people starting talking to soon, or other issues) remember that Dr Kim has an expertise yes, but he's a business man too, so every potential problems he may have has to be avoided. Having said that, there's no justification after the 1/3 of the vocal chord has been soldered, that any issues may rise.
Many athletes have had a broken ligament or tendons, and after surgery and recovery period and re education (sounds familiar?) they can resume their very demanding physical activities, there is NO reason that the vocal chords are any different, and couldn't bear an intubation
