How much you enjoy Neighbors 2: Sorority Rising depends on how much leeway you give it for having its heart in the right place—even when its brain is slightly addled, and even when it's constrained by the limitations of its format.
Neighbors 2 is a hell of an effort, see, to do something meaningful with an inherently soulless vessel—the studio-mandated comedy sequel, in which anything successful gets another chapter, whether it needs one or not. In this case it's Neighbors, which sort of felt like a marketing plan in search of a story to begin with.
The sequel apparently grew out of another elevator pitch—what if instead of a fraternity moving next door to a Seth Rogen and Rose Byrne, it was a sorority!—only in so doing, something kind of magical happened. Rogen and his four male co-writers had to try to see the college Greek system from a female perspective—and apparently, they didn't like what they saw.