True but irrelevant, since there is a huge difference between being bankrupted by the medical system itself, and bankrupted because you can't afford not to work (which can happen for many other reasons and is a separate problem to guard oneself against).
I don't think it's irrelevant at all. People throw out the statistic that X% of Americans go bankrupt because of medical problems inferring it's because we don't have single-payer healthcare.
The statistic about Canada backs up the idea that isn't true.