Read the article. The advantages of the high power density are negated by the inefficiencies of the heat cycle, construction costs etc. Yes, it makes sense to

Read the article. The advantages of the high power density are negated by the inefficiencies of the heat cycle, construction costs etc. Yes, it makes sense to focus some R&D on nuclear. However after seven decades, it would seem that an alternative to turbines is not so straightforward. The alternatives mentioned in the article are at least a decade (and probably much more) away from commercial use. Even then the other overheads would remain. As with many engineering problems, an apparently decisive advantage can be overwhelmed by secondary effects.