My own view is that some of these things are easier to prevent and deal with than others.
We’ll probably never get rid of all the sex crimes. Or all the muggings. Or all the murders. We’ll have to keep chipping away at them forever.
But some marginal sources of murders, or arsons, or sex crimes are much, much greater than others. So not taking taking steps that have a high marginal reduction in crimes for a low marginal cost is dumb. Doubly so if the reason for not doing so is also dumb/erroneous.
And also in this sense I tend to view the increase as being largely unnecessary, whereas we must essentially accept that there will be some minimum number of car thefts if we don’t execute all car thieves and a number of innocents accused of car theft.