"Green energy" and "environmentally friendly" energy are not exactly the same. It's the "If all As are Bs, that does not mean all Bs are As."
For example, I support clean exhaust from cars. But that does not mean I think cars must get 50 mpg.
When they added CO2 to the definition of "green," they RADICALLY altered what "clean" energy means as - as in the case of nuclear power - to a 180 degree exactly opposite meaning. Sure, nuclear power can render entire areas uninhabitable for thousands of years, create huge death-zones, cause a billion birth defects, kill countless people - but since it doesn't emit CO2 then it's "clean" and "green."