Which is weird, because the same authors published a more notable paper on exactly this subject very recently in Quaternary [0]. I don't think the argument is unreasonable, but the author of this article is terribly misinformed about many things. For example, the cyclades would have been visible from the mainland, as they still are today! [1] is the view from the western mainland, [2] is the view from the eastern side, today the island of Ikaria. Notice that Crete is also visible from both the Cyclades and the mainland under ideal conditions.
[0] https://doi.org/10.1016/j.quaint.2022.09.001
[1] https://www.peakfinder.org/?lat=37.98035&lng=24.52317&ele=25...
[2] https://www.peakfinder.org/?lat=37.53781&lng=26.01118&ele=87...