That is basically the gist of it. Like in any police series, way too many things happen in one episode and the rookies experience more shootings and heavy crime than most police in many life times.
The bad writing is mostly about how the leave of people from the show is dealt with. They might get a short farewell, but then they are gone and nobody thinks about them anymore for more than one episode. That lacks. Also the writers make quite many characters spill deep wisdom out of the blue that usually takes a life-time to acquire and therefore the only one who doesn't look silly doing it, is the Sergeant. Also it is not credible that the receiving end always follows this advise given. Also it is silly how the relationships that end in the show never have a fall-out.
The bad writing is mostly about how the leave of people from the show is dealt with. They might get a short farewell, but then they are gone and nobody thinks about them anymore for more than one episode. That lacks. Also the writers make quite many characters spill deep wisdom out of the blue that usually takes a life-time to acquire and therefore the only one who doesn't look silly doing it, is the Sergeant. Also it is not credible that the receiving end always follows this advise given. Also it is silly how the relationships that end in the show never have a fall-out.