I think it's always justified for any devs to want or need DRM for their games, obviously, but in this case it's extreme, at least if I launch Steam while my modem is turned off it will start in off-line mode and I'll be able to play my games. It's really the only thing that I am "against" when it comes to DRM, if I buy my games either retail or digitally I should always have the right to play them off-line, I never considered the Internet or the fact of "being on-line" a pre-requisite for entertainment, if I am being obliged to remain on-line to have the right to play a game then I think we've just hit a wall of desperate nonsense, and to be honest I never thought that Ubisoft would have been able to do that.
But fortunately enough for me I don't like most of their games, and that's no exaggeration, the only game that they have developed which I honestly enjoyed and still own to this day is Beyond Good & Evil, and we're going back about seven years ago.