>>3796208It shows up on a studio shot designed to display it at its worst. In real life, it's not a major issue. You don't run into moire in most situations. Worms, however, ruin almost every photo and show up in much broader situations.
Also no Fuji can compete with the 5Ds R or the a7RIV in resolution, or with the 5Ds for that regard. So you could use the 5Ds with its filter stack and still have a sharper picture than Fuji's. Also you're using more magnification on the others. The Canon is 3 years older, too.
Even compared to other APS-C sensors the Fuji loses, look at what Canon's 32MP sensor can produce.