> making a fusion plant isn't a stepping stone to making a nuclear bomb
In theory a fusion plant can use the neutrons to irradiate the right chemical element to produce Plutonium-239 or Uranium-233.
It has been estimated that each 14.1 MeV fusion neutron could be used to produce up to 0.64 plutonium or 233U atoms [4] assuming a TBR of 1.06. This corresponds to 2.85 kg plutonium per MW-year of DT fusion power production, assuming that all of the neutrons are captured in the blanket.