I'm trying to see this from Larian's point of view and while I understand how it helps the logistics of patching, I guess I'm bewildered at the point of going through the trouble of having a physical disk at all if it just sends you to Steam. I suspect that the attraction of the physical copy for many of the Kickstarter backers like myself is because we wanted a copy of the game that doesn't require an internet connection and one we know will always be there regardless of whether Steam or GOG is in business. *shrug* I love Larian but quite dislike this turn of events.
I agree, that really does not make any sense at all if you can't actually install the game from the DVD, but have to download it from a digital service. What is it for, a decorative coaster?