Environmentalists have no power whatsoever and most of the people in the younger generation do not have the same antipathy towards nuclear power because we grew up in a post-SALT world and haven't lived through the spectre of reactors being used for nuclear proliferation and weapons production.
Regardless, governments do not typically care about public sentiment when making strategic moves for long-term time horizons. It's why we have a strong military and why despite so much whining about its cost, the F-35 exists and is being fielded by as many squadrons as can get their hands on it. If they wanted to build out nuclear power in a civilian capacity, they would. We already do it for subs and ships.
Regardless, governments do not typically care about public sentiment when making strategic moves for long-term time horizons. It's why we have a strong military and why despite so much whining about its cost, the F-35 exists and is being fielded by as many squadrons as can get their hands on it. If they wanted to build out nuclear power in a civilian capacity, they would. We already do it for subs and ships.