There was a time in my own life (not that long ago) where I would have say, "Nah, people don't choose houses just because they can see inside." I would have contended that it was rare. After many, many policemen told me I was wrong (I was teaching at police academy and then worked as a consultant with police), I rethought my position.
If people can get a sense of when a house has bedded down and everyone is likely asleep (and the dog contained), it gives them a way of planning a criminal entry.
I should also mention that my mother, father, husband and sons-in-law all had the same idea (that we should have blinds and curtains and use them).
But I used to be very casual about all of this. Then one day, I realized a neighbor with a two story house had a camera aimed into our sunroom (not our actual kitchen, but still). I was very angry. And, the police said there was nothing I could do but erect a screen along our fenceline to obstruct the angle of the view. So that's what we did. Same neighbor has a camera aimed onto our driveway as I type - and that same neighbor figured out when we were gone from home and stole things from our mailbox and our back yard (as well as the back yard and mail box of two other neighbors). Long story. But yeah, get window coverings. Use something at hand if necessary.
For a sexual sadist or sexually motivated perp, young women inside uncurtained windows is an age-old lure. Yes, those men are defective or whatever, but they are out there. And they can become opportunistic voyeurs, and then...attackers.