> As the "non-proliferation" treaty they link to makes clear in it's very name and in the full explanation, they want to first limit unnecessary expansion.

"First" sounds like the key word in that sentence. What do they want second, third, etc?

Your link says this: "An equitable plan for the wind down of existing fossil fuel production, where nations with the capacity and historical responsibility for emissions transition fastest, providing support to others around the world."

Which sounds a lot like "stop extracting and burning oil, gas and coal"