The author of this article seems to think that occurrence frequency is the sole metric of whether a bug should be fixed. Which of these two is more important?

The author of this article seems to think that occurrence frequency is the sole metric of whether a bug should be fixed. Which of these two is more important? - 0.1% of my users lose their data irrecoverably - 30% of my users get an error page and have to refresh The article never waded into this at all, which is disappointing. I don't feel like I learned anything.