Yes, there was some chatter about this. If you recall, it was very much about what possible avenues there could be to deal with a government who had, arguably, suspended many basic civil liberties, with no end in sight.
It is, theoretically, a possible tole of the GG to respond in that kind of situation.
Overblown in this instance? Quite possibly. But it very much speaks to the kind of frustration that many people had with a government that was restricting movement, freedom of association, and a media that was refusing to question any of it.
And to maybe put this in context for those outside of Canada, there were significant interruptions in the House sitting during covid. Really an unprecedented level of centralizing of power in the PMs office. In my province, the legislature did not sit for over a year.
All of which is to say, the normal ways citizens might challenge government decisions in a democracy were suppressed, so perhaps it should be no surprise that frustrated people were discussing what other options might exist within the law, even if they were far-fetched.