It's certainly a data point to consider, however it's worthwhile to note that his comments from the article seem to be based on a relatively small sample of CZ pistols.
My personal CZ75 is not a reliability star, however it has been 100% with brass-cased ammunition so far. To be fair, there's sufficient information out there indicating that the guns are not intended for use with anything other than brass-cased ammunition to suggest that my use of it was ill-advised.
It also isn't that hard to find people reporting extractor difficulties with this model. Of course it's not hard to find people reporting issues with virtually any brand out there.