The ‘problem’ I have with some modern lenses is that their shortcomings are corrected for by the camera; while this isn’t to much of an issue if you shoot JPEGs, it can be a bit of a pain if you shoot RAW.
When I first loaded some RAW files into RawTherapee that I shot with the XC 35mm 2.0, I was taken aback — while the crazy barel distortion was easy enough to sort out, the purple fringing that appeared in some of the images was challenging to deal with.
Vintage lenses come with their own challenges, of course (and some of them aren’t too great in general), but on the whole, I find them to be a lot easier to deal with personally. And, of course, not all Fuji lenses follow this trait — some rely on very little (if any?) in-camera correction (but, alas, this is reflected in their relatively high price tags).
Anywho, it’s just a personal preference on my part (and, indeed, one of many). ‘Horses for courses,’ as they say.