Not quite. 80% of the energy in D-T fusion reactions are released as neutron energy. I sure hope most of that will be used for generating electrical power rather than breeding tritium... :) The dpa rates and helium embrittlement are way higher for fusion and fast fission reactors than for thermal fission reactors. See Figure 3 and 5 of https://www.annualreviews.org/doi/abs/10.1146/annurev-matsci...
Maybe this will play out like nuclear technologies. Incredible potential for good also means incredible potential for bad. For nuclear, the good was roughly limitless energy at very low environmental cost and low human labor. The bad was nuclear weapons material and nuclear accidents. After the accidents, the nuclear industry in advanced countries basically goes into sleep mode, maintaining existing assets, but unable to expand or grow. Perhaps the lab-leak will have the same result for biomed sciences. Accident leads to millions or tens of millions of deaths and industry must go into stasis. You might say the gain-of-function research is sufficiently differentiated from normal biomedical research that they don't get grouped together. But I doubt it. You can probably do gain-of-function in any old bio lab. The only thing stopping it is the good intentions of the users.
The effort to cause massive societal disruption and destruction is so much easier for bio based weapons than for nuclear. In nuclear, you need so many things to line up if you're building a weapon from obtaining the requisite materials, enrichment, weapon design and electronics, delivery vehicles; and so many things to go wrong if you are going to have a consequential nuclear accident. In contrast, bio weapons can be developed in a dinky lab, deployed, and then self-propagate worldwide.
