Thank you for your feedbacks ! I totally understand not wanting to read all the lines, the "shut up" button is not there just as a joke. I keep track of how many times the player skip the monologs or the levels but it only change a few lines at the end. But I didn't want to punish player for that, I prefered to give the possibility to decide what kind of experience you want.
Also tracking read time could be complicated because reading speed can vary a lot from one person to another.
For harder puzzle, it would mean a longer game and I think it's the right size for most people as it is. I also don't think very highly of the "complicated" puzzle I designe. It wouldn't be hard to make optional ones though.