I think it should have been made quite a bit more serious. Massive red letters on the screen.. this just looked (as far as I can remember) like any other update dialog we've seen before (like the point updates if you wanna call em that).
This was so massively different!!
I had the sad face after update as well.
Followed your guidance to move .kodi data.
I shuddered at the thought of that because my install was well 'lived-in' but what options did I have?
I've always liked osmc, a great option for the pi and I'm greatful for the developers work but for us to.have to move (effectively delete) the userdata is heavy.
You are going to argue that I should have looked at the update message carefully but at the end of a long day at work you just do what you normally do.
--We don't all read the blog post about the forewarning, I would say a lot of ppl just use the system, and that's it.
Gutted to have lost all my brilliant userdata, favourites, sources, goodness knows what else.
Sad face indeed.