No, that’s not likely at all.
There is n operations manual somewhere and I would almost guarantee that is sits on a shelf, dusty and unread by the present union maintenance guys. The union maintenance supervisor is saying “well, we never did that before” thus letting precedent rather than the design parameters and him take the blame.
The roof collapsed because the internal pressure was inadequate and the pressure was inadequate because a door was open and the fans were not running or some such. It was a maintenance error, a human error
You obviously did not bother to read the article.