Because you are in Hawaii.
If Africanized bees reach Hawaii, it will be headline news.
Kona Queens do a lot of business with the mainland US, because they can just about guarantee that offspring from their queens will not be Africanized. Therefore, if the mold is broken, it will be big news among my commercial friends who sell “gentle bees” to the buying public.
Just as an aside, I have looked after an africanized hive for just over a month. You will know if you have one. Walk across the garden about 50 feet away, you may get 5 or more stings. Open the hive, bees boil out of the top and you will have more than 100 on your veil in seconds. They are noticeably different and not just cranky. My gloves had more than 50 stingers in them when I finally counted, and I actually scrubbed them to remove the amount of alarm pheromone which had been sprayed on them by the bees. Quite an experience.