

Horizon for going into production of a NPP is at least a decade, more likely two. By that time storage techniques and renewable prduction will be able to cope handsomely and at a lower price, so yes, too late. And yes we are much too late in reducing carbon output (output is still growing) and capturing greenhouse gasses is miles away from being relevant to cooling the planet.
Influx reduction is our best bet and it will have to happen quickly or this planet is going to be hard to live on.
Nuclear is not the future or even the present.
To summarise: use a terminal server system if you can, using a desktop for the end user that can be made to behave like windows (or another concept that works for your demography), and have the whole setup in a NixOS configuration that you manage in git.
I see that https://github.com/ltsp/ltsp is still going strong.