Sorry you had a bad time, but sample size of 1 is not compelling. "The plural of anecdote is anecdotes, not data."
The issue could easily be bad management, bad hiring, etc etc etc.
The issue could easily be bad management, bad hiring, etc etc etc.
Of course more data is better.
[1] http://blog.revolutionanalytics.com/2011/04/the-plural-of-an...
e.g. I know MANY people who claim to have seen a ghost, but I don't consider that useful data supporting the existence of ghosts. Technically it is data, but it's the LEAST trustworthy form of data, hence the dismissive expression.
The "not data" version is saying that anecdotes are in such small numbers and uncontrolled circumstances, that even though they are data points in and of themselves, they're not rigorous enough to draw wider conclusions from. It's a different context.