I do not recall her exact words, or the words of any of the staff. She could very well have said something to that effect, but I do not know. The problem with social media and places like this is many people play fast and loose with the facts. Sometimes, they repeat what they've read or heard elsewhere.
Edited to add:
I did a quick search. This video is from 2 years ago. At 18 seconds in she talks about the public wearing masks. She does say that they "can be flexible if we find any new evidence" WRT wearing a mask. In this interview, she did say that they would change if needed.
https://www.cbc.ca/player/play/1717905987907