Not necessarily. Professor Jørgen Amdahl was presented with a life size model of the hole on the starboard side, as highlighted by Henrik Evertsson, and asked his expert opinion, as a a specialist in marine collisions, what type of object or force might be responsible.
He then did some calculations and in very simple language for a tv audience to understand, he gave a broad range of possibilities. He initially, before doing anything, said he was sure the JAIC was right but when he did his modelling he was not so sure.
This is objectivity. Can't ignore something just because it doesn't fit with the theory.
Imagine someone is determined to destroy that ship, then they may well attack it in severl different ways to be absolutely sure. It could just be sheer coincidence. One could be due to poor maintenance and just by the by, or it could be the cause of the accident and at the same time it was hit by the sub shadowing it when it violently turned slightly because of the explosion at the hull. Because the JAIC never looked at anything else other than the visor falling off, all these questions remain unanswered.