For one thing, energy demand hasn’t been increasing at the consumer level per capita. So you either have a growing population or growing commercial usage (like with data centers) or both driving energy demand.
Is there some literature that points to an idea that it’s faster to build a gas or coal power plant compared to a renewable one? My understanding is that solar is cheaper than gas, right? Even solar plus grid scale batteries are in a similar ballpark. And let’s not forget that other infrastructure like transmission lines and substations do not have any concept of renewable versus not.
The last thing I’ll point out is that we literally have to switch to renewables. There’s no long term versus short term, really, when we think about it. If we don’t make the switch we’ll actually put all of this planet in a lot bigger trouble than asking people to set their air conditioner thermostats a couple degrees higher.