The plant kingdom (and algae & cyanobacteria) have been harnessing nuclear fusion energy for billions of years, and humanity has developed the technology to do it too (photovoltaic cells) and is building out this technology extremely rapidly now and providing the cheapest source of energy that humanity has ever had.

Nuclear fusion energy generated by the sun is massively abundant. It is also 'safe' (under the Earth's magnetosphere at a distance of 1 AU) and the reactor is entirely self maintaining and will run for billions more years.

This article is putting together buzzwords of fusion and 'AI', two things beloved by mediocre, uncritical intellects. Putting money into fusion research and development (and quite large sums) is a waste when it could go towards solar and batteries, both of which are technologies which promote decentralisation (the opposite of nuclear power plants).