No? Models are useful for making predictions.
If somebody like the POTUS tells you that nuking thunderstorms would be great against climate change, you don't have to just take their word for it. You can input that into your climate change model, and it will tell you how much of an impact this will have, and whether the impact is good or bad.
The difference between a better model and a worse model is that the better model will agree better with reality.
A shitty model, like the one POTUS is using, might tell you that nuking all thunderstorms would be great. Then we go ahead and do it, and we all die.
A better model, like the mental model that every 14 year old child that starts studying physics and radiation has, might tell you that nuking thunderstorms is a pretty bad idea that would kill us all due to dozens of reasons.
Given that we cannot make accurate predictions today of what the weather tomorrow will look like. If you want to predict the 50 year impact of more subtle changes like, e.g., covering the Sahara with black mats, you need a pretty good model to get an output that isn't multiple orders of magnitude off.
So..... what do we expect from better climate change models? Avoiding the apocalypse to begin with. Worth every penny.