Yes, most JW families are dysfunctional, as are most Mormon families, as are most Muslim families, as are most Catholic families, as are most American families, European, Asian, Indian, Slavician, Canadian, Mexican, Brazialian, etc, etc, etc.
just my humble opinion
To imply that JW families are more dysfunctional than non-JW families is preposterous. Speaking from an American standpoint, JW families and nonJW families, both have their fair share of problems, but also their fair share of peaceful domestic lives. Some of the stuff I read on this board would lead one to conclude that JWs congregations are full of pedophiles, full of alcoholics, full of verbally and physically abusive men, womanizing elders swapping wives with one another, and a whole bunch of other crazy talk. That's not to say those problems are nonexistant in the average Kingdom Hall, but there's some serious exageration on this forum from time to time.