The Permaculture enthusiasts here tend to have a try anything that works attitude, rather than growing traditional crops. There are a few locals that maintain Hawaiian style gardens in the area.
There has been some oppositions to the University of Hawai'i introducing GMO taro varieties, and opposition to GMO crop testing here. That is relatively new though.
The University of Hawai'i, along with other companies, has been growing GMO corn, and many other crops for decades.