It isn't necessarily true. Here (bottom of the sea) it's only hot when the there isn't any clouds, so solar energy that produces the heat is also producing the electricity to run the AC.

It's also a misdirection of guilt. It's not the accumulated CO2 from the decades of burning all kinds of shit that is driving the weather, it's your personal AC unit.

You're describing a very new and not-yet-realized state of affairs where large amounts of power comes from solar. In that world, then yeah obviously the initial concern isn't valid.