Erasure, FILTHBREED and In Somnio are NOT demos. Whoever disliked my previous comment should know better.
I mean is there really an issue with this? Do you not want to have more free indie horror to play? I was one of the main organisers of this project, and we put a lot of time and effort into curating this collection. We talked about not allowing full releases but the thing is this is a project to raise awareness of developers in the Haunted PS1 community and some developers simply didn't have anything that would work as a demo but we wanted to support their work, they felt like these were good options to submit and our curation pannel felt like the games were deserving of being included.