I would not put my health in the hands of a Pizza Hut employee with limited training about CC and the seriousness of Celiac disease.
I didn't read anything in the news item about "limited training" so am I missing something? Prepared in an isolated area, segregated ingredients, parchment paper, sanitary gloves, dough from offsite, dedicated cutter, special boxes--where do you think it will go wrong? Here in Ontario, Pizza Pizza partnered with the Canadian Celiac Association, perhaps three years ago, and it has worked well. I have eaten their gluten-free offering a number of times with no issues.