Yes the 1780 hurricane season is the most destructive recorded. The decade of the 1780’s was noted for very active hurricane seasons.On the 1780 season this might put things in a bit of context:
The 1780 season was extraordinarily destructive, and was the deadliest Atlantic hurricane season in recorded history with over 28,000 deaths. Four different hurricanes, one in June and three in October, caused at least 1,000 deaths each;[1][2] this event has never been repeated and only in the 1893 and 2005 seasons were there two such hurricanes.[3] The season also had the deadliest Atlantic hurricane of all time, the Great Hurricane of 1780.