The problem is that they emphasize the "self sacrificing" spirit. Too many people take imitating Jehovah too far, and start emulating the ransom sacrifice by adding additional sacrifices to it. This happens every time you are told to sacrifice all your time, your health, your money, getting nice things, or anything else for the cause of getting people into the cancer or trying uselessly. So, they make the sacrifices, and expect others to also make additional sacrifices to continue trying to emulate that ransom sacrifice. And they do so in vain--not only was the whole idea of a "ransom sacrifice" for our sins a complete scam, but even the Bible blatantly tells us that Jesus' sacrifice is itself sufficient. Anyone trying to emulate that sacrifice by adding something to it is effectively rejecting Jesus.
A spirit of intolerance is also dominant. So I want to listen to music. What the Filthful and Disgraceful Slavebugger does is puts some restrictions down, along with a good dose of guilt and fear that people will die at Armageddon or get possessed by demons for not obeying. Of course, this means they are going to want to stay a long distance from the "edge". They are indistinct about where "the edge" is, so people don't want to venture anywhere near. So they get self-righteous, and then they expect everyone else to follow suit.
This is present in the world, but the witlesses are very prone to self righteousness. If people viewed themselves as individuals with the rights to enjoy life to the full, without having to sacrifice anything to a "higher cause" or feeling bad for enjoying anything, they would also see others as having these same rights. People that view doing good for themselves and society as inherently moral are not going to have reason to be self-righteous (the more they adhere to it, the better off they and the world are going to be). Also, if people see doing what is bad for self and society as immoral and avoid that, they are going to be better off. The more people practice these forms of morality, the better off everyone is going to be, and the prouder they rightfully should be. Self-righteousness would not be a factor.