What about a single scholar's un-peer reviewed rebuttal? One of the fun things of social media is that something like this goes viral and everyone says "see I knew it" and the skeptics get shot down for "you're not an academic" but then another academic is skeptical and then we're back to "see, see I knew it." I don't see a solution here buts an amusing pattern.
Not sure who the authority here is, if anyone. I imagine this is the kind of thing that will need to be debated and 'solved' at a later time, regardless if Prof Mulder's skepticism is correct. There could be more to this story that she doesn't know, for example, but I'm personally leaning towards her thesis, but I'm naturally skeptical so I'm fairly biased.