Is the atmosphere really needy, that it would "want more"?
You tell us, since you're the only one here saying the atmosphere would "want more". I certainly said nothing remotely like that. What exactly is it that you think the needy atmosphere wants? And when did the atmosphere become a conscious entity?
You described a system where a 120PPM increase in CO2 caused a .9 degree temperature increase with 90% of the heat being absorbed be water which takes 4, or 700 (according to Crick) or 3,000 (according to your earlier posts) more energy to heat.
Not too far off, so we'll roll with this so far.
So in an air only system you'd expect to see either a 4, (or 630 or 2,700 degree increase in temperature)
Wow, that's stupid. It would require that some unknown magical power forces the same amount of heat to flow into each cubic meter of ocean and atmosphere, which would cause the atmosphere to heat up much more. Because it's so stupid, no rational person thinks such a thing would happen. Every rational person knows it would grossly violate the laws of thermodynamics.
However, being you are who you are, you'll still keep declaring we do believe that. You're not capable of being honest or admitting an error, so doubling down on your dishonest strawman is going to be the only option open to you.
It's a thought experiment, one that would help your theory if it worked in a lab.
Summary: You made up a kook strawman theory that nobody on the planet believes, lied big and declared we believe it, shot down your own kook strawman, and then declared victory. That typical display of dishonest behavior on your part is why none of the grownups want to talk to you.