What’s improper about stating “actions have consequences”? No one’s saying the people living there today did it, or even would do it (although there is strong circumstancial evidence that says they would). It happened. That’s no more racist than saying the siege of the Alamo happened. It was an historical event.
The mass murder of the French may or may not have led to the ultimate downfall of the country into its state as it is today, but I’m willing to wager that it didn’t help.
Then there’s the religious aspect. That country is very, very Satanic. Sure, there are lots of Christians, and a LOT of missions trips there by many churches all over the world, but it’s still a minority compared to devil-worshipping voodoo. I’ve heard some pretty amazing stories come out of Haiti and places like it. God is not known there, and that fact isn’t helping them either.
As used in Scripture, the purpose of all earthquakes, regardless of the cause, is to warn or administer judgment to individuals in history for apostasy, reversionism, and evil.
One aspect of of the Haitian nation which seems to be avoided, is their past history and trends as an enemy of the US. Our expenditure of Billions of dollars there protecting ourselves defensively from many threats being fostered there is being ignored. There have been many a nation with far less, who turned to God with far more growth, than exhibited by Haiti.
Considering the number of antiterrorist special forces sent there over the last decade might indicate things were going on there which haven’t been so publicly revealed.
IMHO, I don’t rule out that God Himself might have been administering either judgment on evil in that nation, and/or warning others that such enterprises do not escape His view or judgment.
All history is His Story, and there are reasons for all things, for believers and unbelievers alike, although rewards are predestined for those who persevere through faith in Him.