Some are very thankful for the analysis, others don't seem to appreciate how important correctness is in this type of distributed systems. I find it's a good indicator of the maturity of the teams working on them, and how much I'm willing to trust each system.
I hate to nitpick but I'm generally curious. How do you know it's a good indicator? It can definitely be _an_ indicator but how do you know it was good? Did you have a follow up experience that validated what the indicator indicated?
One way is to note whether or not the response to the report dismisses it or hand-waves it away. Another response is to neglect the report for 18 months with no reply.
The tests that aphyr conducts are brutal, which you can see by casual inspection of his Call Me Maybe site or his talks. If the response of a software team tries to divert his attention or your attention from the issue, it does not leave a good impression.