I partly agree with your criticisms but I think they way you expressed them was not very helpful. If you want the developer to improve their work a less hostile tone would be more effective.
Also, I think the comparisons to Echo are unfair given that the similarities are hardly unique or original to Echo. Anyone who's read Stephen King's It knows that the idea of 'a group of friends reuniting in their childhood town where an ancient horror lurks' has been around for decades. In fact, at this stage I'd argue the premise of Echo is more similar to It than Silverstone's is to Echo given the antagonists of Echo and It are both incomprehensible, alien entities feeding on the negative emotions of their town's residents while the Stranger is a more person-like entity with a seemingly specific agenda. Yet no one calls Echo 'It-but-with-furries'. I see no reason why Echo should have a monopoly on this idea in the horror FVN space. The important thing is that the VN distinguishes itself enough from earlier works and I think Silverstone appears to be doing that.