I have observed that many "weird" things jw do is just because they had the tendency or were weird even before become wt.
Weird people join jw religion becasue the group gives them some playground, not easily available somewhere else.
As jw they can speak and be heard even if a minor participation at meetings etc
Male weird people may even become elders if they dont initially reflect how weird they are.,
there is no big difference in the number of weird people out or inside the jw religion, in fact i have seen more weird people in many other apocaliptic religions, that's for sure.
You have to see those weird religous when they meet and get the "spirit", some even jump like crazy, i have never seen that in the jw religion.