I speak as a trained environmentalist. These rare extreme weather events are emotive publicity for climate change but they are mainly only just that and are not actually science.
It's the meteorological equivalent of a horrific serial killer being used as evidence that crime rates are going up.
This is somewhat true (though the analogy is not), in that it is an event which correlates in frequency with the measure of interest, but where individual occurrences cannot be unambiguously tied to it.
The problem is that they aren't as rare as they used to be, and they are pushing the overall average up. If you look at other natural phenomena, like the tide coming in, it comes in waves and each wave is higher than before. You still have moments between each wave, when it seems like it was before, but the change does happen.
It's the meteorological equivalent of a horrific serial killer being used as evidence that crime rates are going up.