I appreciate you noticing the visuals and atmosphere from just the one screenshot! To clarify, the post had a strict one-image rule, so it didn't show the full gameplay mechanics. If you check out the actual itch page, you'll see there is quite a bit more to it than just walking around.
At the end of the day, I make games to learn new skills and have fun, not to chase market trends. Every genre—from liminal horror to murder mysteries—has been done countless times, but that shouldn't stop anyone from creating what they enjoy. If liminal games aren't your cup of tea, that's totally fair, but judging a whole project off a single image is a bit of a leap!
I'd be careful before you cast harsh judgement on others just minding their own business and creating something they enjoy doing. Because one person might like a game but that doesn't mean another person will, however, dogpiling on someone else's hard work because A, B and C, esp making it vocal about it can come off as rude and disrespectful to the developer.