I don't use the bike lanes because most of the places I go don't have secure bike parking. I'm worried my bike will be stolen, and the local police don't take bike theft seriously. Some of the local dedicated bike trails have been essentially taken over as homeless camps, which are ironically full of stolen bike parts.
Your concern of theft is a dominent reason cited for not using bikes in wester countries. Interestingly, bike theft per capita is higher in bike paradise like NL and Copenhagen while ranking in the least concerns of those users.
That’s the x thing is higher in higher population areas problem. You have to calculate the probability of your bike being stolen if you have a bike. So not bike thefts per capita but bike thefts per bike owner.