It's really not.
It also helps to keep in mind the distinction between logical fallacies, used in a strict logical sense, and strength of argument. The case here is one of "what is the evidence to support a belief?", not "are the argument's predicates and conclusions logically valid in a strict sense?".
The original argument was that the article was "too quick to proclaim". The rejoinder was that this wasn't the article's conclusion, but that of an expert on the subject.
The discussion has been advanced, the initial claim invalidated, and additional relevant information provided.
To reject the conclusions of the article simply because of an appeal to authority, without also presenting a stronger claim that the authority is invalid, doesn't advance the argument.
To persist in that is tiresome.
A key question is whether or not the authority in question is credible. I've engaged in any number of discussions where showing credibility is at issue, and showing a particular source's good faith or record of admitting error (or not relitigating falsehoods) is crucial to qualifying or impeaching a witness. Again, you've not done this.
Paul Graham's "How to Disagree" is popular around here for various reasons. The derived graphic on hierarchy of disagreement is also strongly recommended.
http://www.paulgraham.com/disagree.html
https://commons.m.wikimedia.org/wiki/File:Graham%27s_Hierarc...
You might also want to catch up on your logical fallacies and how/when they're appropriate or not.
http://www.fallacyfiles.org/authorit.html http://www.skepdic.com/authorty.html http://rationalwiki.org/wiki/Argument_from_authority http://www.nizkor.org/features/fallacies/appeal-to-authority...
Note that key to these is the question of expertise.
There's no condition requiring the subject matter to be outside her area of expertise, in fact it wouldn't make sense there - since she's not an authority on areas not her expertise, it can't be an appeal to authority in that instance.
Sure - trust her to know the data in the space better than some random doofus. That's sensible, and why we have experts.
That doesn't mean you can grant her extra consideration when evaluating the soundness of the argument she makes with that data as support - the logic contained in that argument does NOT depend on her being a domain expert, but on being a good logician. That's what the fallacy points out.
I don't think we're disagreeing, but I wanted to clarify the distinction between her being a field expert and her being an argumentative expert.
No, it's actually quoting "Sherry Turkle, director of the Initiative on Technology and Self at the Massachusetts Institute of Technology", and maybe you're a bit too quick to dismiss the amount of thought she put into such claims.
https://en.wikipedia.org/wiki/Sherry_Turkle