Probably. Digital renders are printed out as 3D models. Professional painters paint the miniatures. The 3D models (and resin masters, in the the old hours) have better detail than production product, and, of course, professional painters paint far better than you and I (they also don't paint an entire pledge worth of miniatures!). I've learned from Cryptozoic (and others from the first Project ELITE KS) not to pay much attention to the prototype miniatures. However, this is a Catch-22 situation for anything made with metal molds, particularly in First Created projects from new companies with no retail track record. The molds are too expensive to make before the KS (which is why they use KS in the first place) so they have no production miniatures to show.
Still, offering sculpts of miniatures most hobbyists already have may be the right move. More backers and more SG's can mean more problems for a new company that a smaller KS would not have. After fulfilling their first KS, they will have gained experience that will make their second KS less of a risk. Sure, there's always FOMO, but there are plenty of unpainted miniatures in the painting queue.