It's not the percentage. I have a minute left, so let me put it this way.
I don't know what it's like in Quebec, but in Ontario, children are required to have a vaccine for a number of different diseases to attend school. It seems odd that we wouldn't take a similar approach to saving lives in relation to a pandemic for an application on our phones so long as it is privacy preserving in every other possible way. For the DP3T standard except for voluntariness, it would mean having a data governance framework and data would be deleted at the end of this pandemic.
I wonder why, if a vaccine is not voluntary for kids attending school in Ontario, we are talking about voluntariness to such a great degree with respect to an application that could potentially save lives.