Is this stated "fact" true?:
"Of the six most powerful hurricanes ever to hit America in the past 150 years, three occurred within 52 days in 2005..."
'Powerful hurricanes' are frequently measured by how low their lowest measured air pressure was in the time span that the storm exists. This misleads because it may not and usually isn't the measurement at landfall. Katrina had dropped to a 2-3 Force at landfall.
'Expensive' measures damage costs which tilts towards modern hurricanes as there is greater populations closer to the coasts than in earlier years and there is more statistical reporting than earlier. If there is a repeat of some of the older hurricanes like the 'Chesapeake Bay Hurricane of 1933', the costs would be much greater now than then.
'Deadly' tilts towards earlier hurricanes where predictive weather reporting was less or missing. The Galveston Hurricane of 1901 killed thousands whereas current deaths generally measure less than contemporary tornado deaths.
So the answer is maybe yes, maybe no. No argument that we have more hurricane danger than we had in the last decades of the 20th Century but given that this is a cycle predicted in history, these doofuses waving 'Global Warming' signs do little to convince me.