I don't think it's a fun or interesting game to watch, especially since so much of it is just solving tiny puzzles or tasks as you run around. Weirdly enough though, I find it a lot of fun to actively play. I completely get the reviews where the author lists a bunch of small defects but still gives it a 9/10. Each time I fire it up, I'm thoroughly engaged. Watching someone solve a math puzzle then chase a flying key then levitate a statue to get a book page then sneak up on an eyeball chest is probably dull as heck.
But it'll still be the same game when it's $30 or $15 and, even if you know the story twists, the story isn't really what makes it good anyway.