I, sadly, call bullshit. The last time the democrats were actually good at pushing back forcefully with campaign messaging was when I was still in diapers. Now add in that democratic points actually need a modicum of thought put into them to accept them, while republican points are like grade school insults and comebacks that just 'sound good,' and I doubt we'll get big gains from republican-precipitated disasters.

Edit: Seriously... think about how many people believed that photo of trump wading through floodwaters. And how many others don't even care about obviously fake images like that, choosing to have the idea that such things are normal and okay.