I agree with this statement. The main issue I have seen with theft is cars getting broken into at trailheads, while the owners are back in the woods. These tend to be smash and grab thefts, where the thieves are mostly interested in high value items that can be readily fenced.

Edit: My observation is that most people who would be inclined to steal your gear are generally a pretty lazy bunch. They aren't the sort of folks who are likely to walk more than a few yards from their vehicle and beer supply.