Whether the poster was "belittling Dropbox as a product" or "helpfully offering notes" seems like a judgment one can make about the exchange, regardless of poster's intent. I never understood this to be the reason it was referenced, more the SMOP thing. But I hear what you're saying about the details getting warped over time. (edit: And I do think people sometimes use it as a case of "if you listen to everyone's feedback..." but I think that still rings true: regardless of the judgment you place on it, it could have been demoralizing to Dropbox's founders.)