In regards to the Bieber comment, it was meant sarcastically. I'm sorry it did not properly come across as such. That was my fault.
But any children watching Pewd's channel cannot be blamed on his target audience strategy. That just comes down to parents not caring what their kids are up to. Noting to do with Pewdiepie.
And really, Amnesia is more than "puzzles and jump-scares". It's about presenting a unique take on survival horror, and providing a terrifying experience unlike previous entries into the genre, through design, story, and execution.
And also, if you somehow haven't noticed (which you must have seeing how you're suddenly all over this forum), Amnesia also provides something that other horror games haven't provided, and that's the tools to create and share your own fears or even just stories with others.