But that's kind of the point - the article is not saying that the proportion of workers thinking about quitting has gone up dramatically. They're saying that "2

But that's kind of the point - the article is not saying that the proportion of workers thinking about quitting has gone up dramatically. They're saying that "25% to upwards of 40%" are thinking about this, but it seems a completely reasonable rate even in normal conditions, for all we know it may not be an increase at all.