I disagree with the claim that's the wrong concept for UWA. The 14mm is stellar and quite compact. The Fuji 10-24 f4 is pretty damn good compared to what's available elsewhere (DSLR or mirrorless).
Can't tell for myself about the 14mm - I checked PZ before and went for the Zeiss Touit, also because the 14 is too close to the 16/1.4 which I like very much and use very often.
It's alright you're disagreeing, but UWA to me is not something equivalent to 21 on FF. On APSC I'd call 8-12 UWA, longer is more or less normal WA. And I still think, it's very tough to put too much details on a small sensor (which APS-C fpr me still is. If I look on prints, I'm less happy about the Zeiss 12 / X-T2 combination than I am on the ones I made with Nikkor 14-24 at 18 mm and of course even more so at 14. And what I saw from Sony's 12-24 on FF mirrorless is just confirming my opinion for me.