Here is a recent article rather than the linked statement by a lobby group:

https://www.bnnbloomberg.ca/nuclear-power-s-awkward-role-in-...

This provides a lot more information and context about what is actually happening as well as what the "green zone" is (as opposed to the "blue zone")... as well as maybe a bit of unnecessary editorializing too!

(I would add that the HN link name is misleading here, what applications for what that were rejected is not clear and it is misleading to imply that there is no representation for nuclear energy at COP26.)