While I see your point (0 > 1, by definition) I think this sends the wrong message.
You need several hours of relatively strenuous exercise per week. Walking around the neighborhood, or your house, or whatever has diminishing returns. You need to steadily increase load to continue to see results. The body is incredibly good at adapting. People will read your statement and walk around their house twice, sit down, and not move for the rest of the night.
My point is only on lowering the friction to do an activity. The more friction there is to something, the more likely it will get dropped. Such that I'm not aiming to get people to think just one walk will do them for the day. Rather, I'm aiming to get people to realize you don't have to "exercise." I don't know why that framing is problematic for folks. But I would wager money that it is.