I had one in hand a couple of weeks ago and I did not like it at all. I have never used a Fuji digital camera so it was very foreign but I couldn't shake the feeling that it was poorly designed for how I interact with a camera. My Nikon DSLRs are much better in that regard - as was the Hasselblad X1D I also tried.
Whether or not haptics are important to you or if you "click" with the Fuji is a different story.
As for the comments in the article and the ones above, I would wager the article's author is right. The sensor isn't that much bigger than FF and the newest Sony sensors are phenomenal. Combined with faster lenses negating the need for higher ISOs using regular 35mm FF cameras compared to the MF equivalents means that in most situations the marginal increase in IQ from a larger sensor is squandered. At base ISO on a tripod at optimal aperture you might get a bit more resolution or DR, but probably marginal at best.
My only interest in the Fuji/Hasselblad systems would be the adaptability of MF view camera lenses with full t/s ability for architectural work in my business. Other than that, for typical portrait/wedding/event photography I would not dream of using this Fuji or any other MF system.