The rape thing is tricky though. Very unlikely they were really "misplaced". That answer sounds like an attempt to avoid the real, much harder discussions about the rape case pipeline.
Go investigate this for yourself if you don't believe me, but there are good and difficult reasons why very few rape cases go to prosecution. It's not a US problem or a Minneapolis problem, the same things are found throughout the world.
Core problem: a huge number of rape allegations are false compared to other crimes. It all starts from there. In anonymous interviews police will normally claim about 50% are false. There have been academic studies that reach similar numbers. There are also a lot of rather motivated studies that try to claim it's much lower, but when you dig into the methodology there are usually big problems and it's clear they've started with a pre-determined conclusion.
So how can a PD end up with 1,700 untested rape kits? Easy. A woman walks in and claims she's been raped. The police administer a kit. They also do a bit of investigation, probe her testimony a bit. She changes her story and renounces the claim. This happens all the time, it's an extremely frequent way for these cases to end. There are even pie chart breakdowns in some of these studies for the top reasons for renouncing an allegation, for example, it's often a tactic used as part of a fight, when the couple make up she goes and admits it wasn't true. Or the claims fall apart under investigation and she admits she was lying.
So the police shelve the kit. It's not worth sending it off to the lab when the claimant already did something that ensures no successful prosecution will ever occur. At the same time it's evidence so they don't destroy it.
One day someone finds the big pile of untested rape kits and goes crazy. OMG evidence of institutional sexism at the police, how can this be justified. Some police manager looks at the data for the reasons and decides "the kits are untested because we think 1,700 women lied to us" isn't going to go down well and doesn't want to start that argument, because a whole lot of very angry people, wrongly and delusionally, believe women never lie about rape. So they come out with this nonsense about them being "misplaced" and hope it'll blow over.
Low rape clearance rates are mentioned in the article as evidence of poor performance at this PD, but it's a bit vague as to what they mean. What you see though is that this particular crime has very low clearance and prosecution rates globally. When people drilled into loss rates at different parts of the case pipeline, they found there are no easy answers and no ways to change things beyond the obvious one of relaxing standards of proof to make it easier to put men in jail.