How, exactly, is it "misguided" to talk about politics and policy changes to mitigate the effects long before we reach the "run or die" stage? It's the only way

How, exactly, is it "misguided" to talk about politics and policy changes to mitigate the effects long before we reach the "run or die" stage? It's the only way to get things done currently. You're saying we should wait until the floodwater is at our ankles and only then do something?