Like in DF, cat-lady cats tend to be heavily inbred (most crazy cat-ladies start out with a "healthy" number of cats, after all). Unlike DF, this can have some pretty severe consequences, physical and psychological alike. Even aside from the genetic stuff, cats in these situations tend to be in pretty bad shape - these are not 200 cats living in a pack, these are 200 rivals competing for room, food, "hunting grounds" and all the other stuff cats care about. Scratch and bite wounds galore, and add to that that they're living in their own filth, most likely without enough food to keep them healthy in the first place.
If released into the real wild, many would wither away from starvation over the next few weeks. Most of those who actually hunt well enough to survive (cats who has grown up among humans are often dependant on them to give them food) will probably pass away when the Swedish winter comes around. Receiving a quick death sound much better than slowly
If released anywhere near where people live, these communities would probably see a drastic increase in sickly stray cats begging for food.
Oh, and yes, Sweden does have a kitteh-police task force. They're called länsveterinärer, and is one of Swedens oldest state-authorities still existing. My dad is one of them.