Well documented? This claim about extreme weather gets repeated and echoed by people who assume that it must be true because they keep hearing it, so they don't check. But it's not actually true.

There's a summary paper here that explores the data and shows this to be true:

https://link.springer.com/content/pdf/10.1140/epjp/s13360-02...

The analysis is then extended to some global response indicators of extreme meteorological events, namely natural disasters, floods, droughts, ecosystem productivity and yields of the four main crops (maize, rice, soybean and wheat). None of these response indicators show a clear positive trend of extreme events

There are other indicators you could use but they also don't show any crisis of extreme weather, often the opposite. Examples:

- Wildfire burn acreage is drastically down over the past 100 years.

- Hurricanes are in decline, both in frequency and energy.

- Rainfall is also down slightly.

You can google those claims to find them if you like because the datasets are all public, except maybe the third which is a bit obscure so I'll give it here:

https://www.sciencedirect.com/science/article/abs/pii/S00221...

the small- and medium-size precipitation systems both exhibit significant decreases during 2001–2020 with trends at −1.13 and −2 mm/h per century, respectively. The large-size precipitation systems exhibit nonsignificant increasing trends during 2001–2020.