Directionality of the text: right-to-left?

[doranchak]

Here's a recent paper, "On the Directionality of Text in the Voynich Manuscript: An Edge-Based Approach":

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Abstract

In this paper, we examine some linguistic properties of the Voynich manuscript. Our approach focuses on the properties of 'word' edges. It is shown that there are clear differences of the symbol distribution between the left edges and the right edges. We argue that these differences indicate the use of capitalization. Since the capital letters are placed at the right-edge, we conclude that the directionality of the text is right-to-left.

Paper is attached.  What do you think?  Are their conclusions sound?