No, none of that has much to do with CO2 output besides transportation.
Nuclear power needs a lot of concrete. Concrete releases a lot of CO2 during production. It does eventually reabsorb it as it cures over a decade or two. IIRC, it might even be CO2 net negative eventually.
Yeah, they do, and they pretend to be wise adults while doing it. Like they're the only ones who thought of this.
EVs, too. No, we don't have to wait until they can all do 1000 miles and charge in 5 minutes. 350 miles and 20 minute 10-80% charge is fine for the vast majority of the market.