You have to love it when people write something without properly researching it, and then make broad sweeping statements based on only those assumptions. Firstly Ghost in the Ghost in the Shell movie was a western production, while the Fullmetal Alchemist movie is made in the East. So it boils down to apples and oranges when comparing it to production values and casting of actors. Secondly, the writer of the article assumes that if the cast is Japanese only it automatically assumed that it will be a success.
Which is false, does anyone remember the absolute piece of shit the two live action movies of Attack on the Titans was? And both movies featured a full Japanese cast and was solely produced in Japan. And should Anime fans be outraged that there is not a single European actor cast in the movie? I mean Conqueror of Shamballa (The Movie) takes place in 1923 Germany, sporting German names like: Edward, Alphonse, Olivier and Bradley. And the country Amestris draws many parallels to historical Germany and Europe of the 1920’s.
[Editorial Note:] Yes I am well aware that Hiromu Arakawa creator of the Fullmetal Alchemist Manga took inspiration from different European countries for Fullmetal Alchemist. But you cannot deny the parallels being drawn in the Anime/Manga between the fictional country of Amestris and Germany.