They don't admit to a general pattern of mistakes like this there, they do say they will use this "as a learning opportunity for all our agents. Whether that is because this was genuinely a one off or because this is the only publicized example is unclear.
A more direct link to where they admit it (and publicly try to fix the mistake) is this: https://twitter.com/perezbox/status/1011708133960536064
They don't admit to a general pattern of mistakes like this there, they do say they will use this "as a learning opportunity for all our agents. Whether that is because this was genuinely a one off or because this is the only publicized example is unclear.