Why Russia Built a Floating Nuclear Power Plant

What you've missed in the video:
1. There is a NPP in the village next to Pevek that will soon be closed, so Academic Lomonosov is first and foremost the replacement of that NPP.
2. Rosatom is actually the Northern Route operator, and Russian Arctic will eventually be pretty much "owned" by a single company. Rosatom will own a fleet of icebreakers, fleet of cargo ships, emergency vessels, ports, NPPs, even existing and future coal power plants, coal mines and company that produce mining equipment, not to mention new living quarters for the employees and their families.
3. Since Rosatom is in charge of the Arctic it will bring more nuclear technologies to the region, since unlike outsiders the company sees nuclear technologies as "green" emissionless technologies.