I grew up in grizzly country in Northwest Montana, spent loads of time out in the wilderness on my own or with my younger brothers, and even saw a mamma grizzly with two cubs in the wild once. They are absolutely not a serious concern.[1] We used to make fun of outsiders who feared just getting out of the car without their guns and pepper spray. :-)

[1] That being said, please don't be stupid: keep your distance and show them all due respect.