I did, a while ago. Their attitude and the strawmen they set up were pretty annoying.
You would think these are academics, and would do their due diligence and research. How can they wilfully ignore statements made by every bitcoin developer about lack of anonymity?
Unfortunately, this seems to happen a lot in academia: If it's been /published/ before, you have acknowlege it. But, if something was done before you was never formally published, you can wilfully ignore it or selectively edit it even if it came straight from the horse's mouth. Heck, you can even steal it.