It's a pretty big logical jump to say fusion has proliferation problem because it creates a neutron stream. It will be as if they build the Hadron collider to warm up soup. It's unrelated to the plant operation, unlike fission.

I think this highlights the bias in the article you shared. Moreover, it solely focuses on ITER which is not a great example any more.

Fusion doesn't really have the problems of fission. Because fusion has been extremely underfunded, the money is being spent extra carefully on ITER. But MIT SPARC is using new super conductors to get much smaller reactors.

Reactors will produce some low level waste, but once we get a handle of the confinement, that issue can be eliminated with hydrogen isotope mixes. Also, Tokamak is only one fusion design, there may be better ways to capture the neutron stream.