I've never put as much stock in "pressure" as a lot of hunters do. So many things are changing in the deer woods that it would be hard to pinpoint exactly how much pressure affects activity. Leaves are changing & falling so cover is in flux, food sources are changing by the minute, it's getting colder, and does are hitting estrus one after another like whack-a-mole. And it's all happening while we are trying to hunt.
If you could eliminate all those other factors and then run a controlled study to contrast multiple seasons of no hunting with multiple seasons of hunting, then maybe you could quantify how much pressure affects activity. Shy of that I'm skeptical. Sure pressure is a factor but I'm really not sure how much of a factor.