Eh, perhaps not as phrased, but it's a scientific claim made by the IPCC Special Report on Global Warming of 1.5 C.
From the chapter 3.3.6:
> There is thus limited evidence that the global number of tropical cyclones will be lower under 2°C compared to 1.5°C of global warming, but with an increase in the number of very intense cyclones (low confidence).
The qualifiers are important - they're not as confident about this claim as others, but feel the risk of it being true given that there is some scientific support for it, merits it being mentioned so people can make informed decisions.