Dear Esther is a beautiful piece of art that communicates its story and themes through visual, environmental and interactive symbolism, both random and scripted prose, and movingly composed music. At worst, I think anyone can at least appreciate the beauty in this world they created, the use of symbolism in the environment, and/or the music.

I think of it as the video game equivalent of a Terrance Malick film where you are basically driving the camera and triggering the narration. I totally get if you don't have preferences for that type of thing, but I think it's extremely healthy for the medium to have works like it. Few games scratch the kind of itch this one does.

Additionally, the act of moving and investigating a 3D, digitally-realized island constitutes interactivity and, thus, marks it as something inherently different from a movie or book. Modern "games" do not have to have deep or challenging mechanics to utilize interactivity artistically.

I've played and beaten plenty of difficult, mechanical or systems focused video games, including most the modern From Software games, Hollow Knight, and old NES games so my appreciation for it isn't some kind of aversion to challenge or mechanical depth.