Grizzlies like areas that appeal to humans. Los Angeles historically.
There was a reason we killed of most of the bears in our past, not only were they a threat but also in competition. Now very few predators hold a position that man cannot easily fill. They talk about the balance in nature but many times in the past we see nature get way out of balance. Man does a better job of keeping nature in balance that nature does, eliminating the need for large predators.