The traditional Big Fusion approaches already have well-heeled advocates, as evidenced by the billions (and billions and billions) poured into ITER, NIF, and prior projects. I’m not sure that a grassroots effort is needed to promote these forms of fusion. It seems to me that aneutronic and other “alt-fusion” approaches are in far greater need of champions, especially as they are often dismissed by Big Fusion supporters.
If ITER ultimately produces something that can be turned into practical fusion power, it won’t need a non-profit society to help. So I don’t think advocacy for “fusion in general” in needed, so much as assistance to those approaches that aren’t supported by massive research funds.
