It says:
The minister may exclude information that, in the minister's opinion, would be inappropriate to make publicly accessible for reasons that include (....) personal information.
It's a pretty broad scope, and who is going to test the minister's judgment? That's why decisions are to be gazetted. That's why they're published in the Canada Gazette. That's why we have reports tabled in Parliament. That's why we have independent officers of Parliament. It's so that we have transparency. When politicians are able to take decisions in secret based on their opinion, then it seriously erodes the public's confidence, Canadians' confidence, in our democratic institutions and the executive should not seek, nor should they be given, this level of power.