[OkayPhysicist]

That's a pretty strong false dichotomy. The government is in charge of a lot of things, they must do multiple things at once. Passing unrelated laws and passing laws relating to climate change are orthogonal.

If we vote to, say, ban the sale of new internal combustion automobiles, sure, it restricts future generations. But it also restricts the voting body, today, by restricting their ability to purchase new cars. The voters are weighing the necessity of fighting climate change against the restriction of their freedom to purchase an automobile. Perfectly fair. If we instead are voting on "lets ban the sale of automobiles to anyone born after 2000" or "lets ban the sale of automobiles starting in 2123", then the people voting on it are not, and never will be effected by the restriction that they voted to put in place. THAT is unjust.