It got a decent about of hate but I think a lot of people just gave up after a while because 1) the movie didn't look that hot and 2) the trailers made it look like they very clearly missed the point of RoboCop (which they did)
I think there's also an element of Ghostbusters is one of the most beloved comedies of its time and Robocop is not held in quite the same regard.
The original Robocop is a good movie, but I don't think there's nearly as many diehard fans. People have been wanting a new Ghostbusters for years, not too many people, comparatively, were asking for a new Robocop.
It's like Banjo and Kazooie. Nuts and Bolts was a pretty good game, but it's not what B&K fans wanted. That said, I'm not really sure it's possible to deliver what fans really want, which is probably just Ghostbusters 3 with the original cast.
I suspect the Russo Bros film will be panned too once details come out, because it's more action-oriented or Channing Tatum isn't funny enough or something.
I think the remake looks more like Bridesmaids with ghosts than Ghostbusters with women. I like Bridesmaids, it's funny. This will probably be funny too, but I would prefer something closer to the original tone, which is sort of a type of movie that Hollywood doesn't really make anymore.
The humor in the original is very subtle. I liked it as a kid, but I actually don't think I thought it was funny, most of the jokes went over my head. Nothing about this trailer is subtle.
But you know, the 1980s New York stereotypes don't make as much sense anymore, the city is not perceived to be as grimy, and so on. a lot of what makes Ghostbusters great is maybe just not doable in a modern setting.