There are no professional sites with any significant viewership that excludes games they cover based on cover art. If there were, it would effect many more games than D:OS, and people would react to the lack of coverage and go elsewhere for reviews.
What difference does it make if some single person armature/hobby site or Youtube channel would not cover a game based on the cover art?
Do you also want a list of anyone who said they were sick of fantasy setting RPGs, and didn't want to review the game if it had orcs and undead in it?
Checking for gameplay video of some ARPG in a bundle awhile ago, I happened on a review from a Christian person specifically targeting Christian players; she was playing a character in almost a bikini armour design, and made note of that (saying the other character classes had realistic armour) and commented on other character design. She also noted the lack of profanity in the game, and described the general level of violence and gore as being accurately represented in the section of the game being shown. Even with a niche review site, a professional reviewer will cover a game they think will interest their audience, and point out things that may be issues for them.
Larian did not have a lot to say about this during the kickstarter, and have not commented since then. Doing so now about this would be very petty and unprofessional.
