I am torn on this. People should do whatever they want (in their right mind) with their will and give it to whomever they want. But I hate the stipulations this guy asked for. I mean, it's one thing if they shunned him to exclude them or if they chose to avoid his funeral for JW reasons. It's completely another thing if they were in his life, especially if they did attend the funeral. And it's radically a complete different thing to insist they join another religion and not just leave the JW's.
Still, his money. He can do what he wants.