It depends what they are doing. TFA describes a situation where a murderer was found because he kept the victim's phone (on!) in his house. I have no problem with using cell phone intercept to track down a murder suspect in a situation like this, although the degree of stupidity required for this to work is astonishing. So based on the article we don't actually know that there were lax procedures. I'm not saying there weren't, but getting a court order for this sort of thing is precisely what they should be doing, so I'm having trouble seeing this particular revelation as something about which we should be deeply concerned. 25,000 searches over eight years is really not that many in a city the size of Baltimore if, e.g., they are using the device to track down stolen phones.