I don't see any problem with doing the research involved in trying to get fusion working. There are plenty of practical problems that provoke creative attempts

I don't see any problem with doing the research involved in trying to get fusion working. There are plenty of practical problems that provoke creative attempts at solutions, which are at least educational and might actually advance the state of this or that art. The problem is promoting the work as if it might ever lead to practical power generation. The first is the same as all other research. The other is just lying. I don't like lying. That is all. It is worse when they claim yet another "breakthrough".