Struggling here. Some guy on YouTube finds Adobe conversions for Fuji XTrans files print fine and since they appear only under high magnification they’re sort of there but he can’t see them. So, its a mental thing. I believe that’s accurate. Since you posted his findings with no qualification, I assume you agree. But fine, I’ll comment on him thinking it’s a mental thing.
As a 10 year Fuji shooter, my alternate view is even the latest Adobe conversions of XTrans files can display mush for highly detailed foliage at normal, less than 1:1, magnification. Not worms, a total lack of definition. The worms are a product of Lightroom sharpening. Easily avoided within the Adobe family by going to PS. But, if the conversion resulted in mush, sharpening won’t do anything to improve the situation. Claims of improved processing can easily be discounted by cycling through the 5 versions of Adobe calibration with Lightroom's Calibration tab. The only change visible to me was going from v1 to v2. They added some sharpening. The later versions look similar to v2 at 1:1 or, even at fit to screen viewing.
Question, are you, or the YouTube guy, Fuji XTrans shooters?