The scope of the outbreak on Lanai is large enough imo to warrant a pause to the pre-travel program in Maui County. You can't just seal off Lanai - the island is dependent on Maui for supplies, medical services, and other essential services. One of the articles I read mentioned a Lanai outbreak as a 'worst case scenario' for Hawaii given the logistical hurdles Lanai faces. Having been there last year, I totally believe it.
My prediction is that Maui County opts out of the pre-travel testing program sometime soon.