I found them quite boring since they are all repetitions on the same theme - just drawing lines on a square. It could have been a mobile game. The world doesn't feel connected to the puzzles, and the exploration aspect of it could have been a completely separate game. It feels like two games glued together, which is IMO not a good design.

It's also not a game that's very demanding from a technical performance perspective, and really has very limited numbers of active entities / animations, so why should I care about his opinions on game architecture or anything else?

Monotonous. More of the same. I mean, I can appreciate the creativity behind squeezing every drop from the concept, but I saw no fun in solving them.

I like puzzle games (Baba is You is fantastic) but I also didn't get far into The Witness. Braid was fantastic though.

I think 3D FPS is generally a terrible interface to puzzles. This is 2D though so maybe it will be better.