UNLESS it is a move towards allowing more than one instance of a Steam account to be opened at any one time which is something I would love to see.
Very unlikely. Publishers definitely wouldn't like the idea of 1 steam account being used by multiple people simultaneously.
The whole optional thing by developers is worrying though yes.
They're trying to protect the idiots. Give Valve a break.
Silly really because most of them won't adopt the system...