a horrible movie that made no sense
In the original movie, the wives were actually replaced by robots. True to the original movie, it appeared that the wives were robots earlier in this verision (like the ATM spitting out money wife). Other scenes also imply that the wives are non-human
Then, as it turns out, the women only have some "robotic device" implanted in them -- which easily can be removed.
Either the movie should have, from the start, made it clear that the wives were not really being replaced (ala the first movie or even Invasion of the Body Snatchers) or remained true to the fact (as in the first movie) that the women were being replaced with robots (and also being killed in the process).
This movie tried to have it both ways, which made it a disaster. If I were one of the main actors in the movie, I simply would have said that if we are going to have the movie go in the direction as it went in the end, omit the ATM scene and a couple other ones as well, also give a little clue at the beginning that they were not going to be robot wives -- only under a type of mindcontrol.