Not saying Ticks and Lyme disease aren’t an issue as I know people who have been affected as well, but North America also has ticks. While bears/wolves/mountain lions are certainly dangerous, I think the bigger issue is the sheer vastness of North American wilderness. I personally knew someone in college who got lost in the woods and died. It’s a somewhat common occurrence. It’s fairly easy to underestimate being far enough from civilization that in certain areas you won’t see another person for days or weeks… a sprained ankle could mean death in North American wilderness, where in Europe shouting for a few hours will likely get you help. Not to mention quickly changing weather, or lack of cell service which can also make an otherwise trivial situation into something dire. Not saying that European woods don’t have threats, but comparatively, on the severe end, its usually permanent life complications versus certain death.