I would like to preface this answer with an observation of mine. Please keep in mind, I do not have any conclusive evidence to back this assertion: this is purely an observation.
Based on my involvement and what I have heard from fellow triagers, I believe that triagers experience an unintentional form of „exposure therapy“ the more they evaluate incoming reports. In other words, triagers become desensitised to the impact and significance of a report due to previously-reviewed reports with significant impact. This phenomenon is better known as a Negative Contrast Effect in psychology.
When a triager reviews an insanely impactful bug — say remote code execution on google.com — they subconsciously set the bar so high for what they deem to be a critical issue. The triager develops a natural tendency to downplay future reports.
This is why I advocate for Google‘s approach to cycle through triagers weekly as a potential solution. The triager mi