Are you saying that all the people working on this this stuff are either idiots or liars? My impression is that there are a ton of problems but they believe they can be solved.
The people working on tokamak are engaged in fascinating technical problems, and generally leave politics and practical engineering problems to others.
They spent many years getting their particle physics degrees, and have no real job prospects besides this, research accelerators, or direct weapons work. You kind of have to feel sorry for them.
There are beginnings of private investment in what might turn out to be practical (i.e. aneutronic) fusion power systems, but they do not seem to need very many physicists.
