If you're knowledgeable in one field primarily, I think it's likely you have some bias towards that field. If you are doing a lot of research only in e.g. Solar, I think it'd be harder to provide an unbiased comparison between solar and nuclear than someone who studies power generation in general.

EDIT: At a first glance, the linked article seems reasonable if not a bit optimistic for future developments and very positive phrasing for NPP in general.