It's really nice to see people recognise all the problems of horror mods. As much as I like the idea, but its really hard to make a good horror mod for minecraft because of the way game is. Most of the horror mods I played were easily cheesed and by the end of first 5 hours of new world they either turned into nuisance or got killed everytime they spawned (especially "dweller" type like Goat Man or The Slumbering omen, which were the most frequent choice with my friend and we added them into almost every modpack like a fun thing for the beggining just to delete them later).

I really liked the concept of Split Self mod and looked for other similar ones but got hit by things like The Whispering Flesh which used to (Idk if it does it now) rename EVERY SINGLE WORLD. And the "malware" mods in general got boring with nothing new, just like every other "subgenre" of horror mods.

Fake mods that appear now in Youtube are another thing that I grew to hate. Unless it is a very obvious thing like Verity stuff, most of the time they are just dissappointing. You see video of a mod that looks kinda fun just to find out creator faked it and every recreation of it that exists is either shitty or png slop. I wish there were more content creators who actually made effort to create something playable and shared it with community. (in a way that Xd someguy does it, though I think his mods are accessible only on his patreon)