Does it? And whose responsibility is it to protect your privacy? Does it fall to strangers who can easily see you through your open window, or is it yours?
Here you show how you miss the point: the point is that you shouldn't have
to protect anything. It should be a matter more simple: you should have the right to go about your business without fear of somebody spying upon you and making records of your personal life. It isn't a matter of being seen; it's a matter of being spied upon and recorded. Surely, you are able to differentiate?
Nobody is denying the fact that undrawn blinds allow visual access; that's not the same thing at all as undrawn blinds being considered carte blanche for the making of a graphic report of what's visible. However you choose to paint it, you simply can't escape the basic fact that photographing people without their being aware or even giving permission is a violation of their person. It might please you to think otherwise, allow you comfort in the execution of similar intrusions, but it don't make it right, regardless of legality.
But obviously, that matters not at all to you; in your argument, at least.
I spent much of my life photographing models with little on; it would never cross my mind to photograph a woman on the beach wearing as much/little without her consent; more to the point, why would I want
to photograph her without a commission? And there lies the trouble: it's the desire to shoot people without their knowledge that is the unpleasant factor underlying the entire exercise, that gives the distaste of the Peeping Tom, the little man in the soiled Gannex, the thumping little heart and the damp finger on the shutter button.
There simply isn't a moral justification possible.