I'm curious as to why people think airlines would pass up "profitable" opportunities to fly to Hawaii. B/c airlines don't like to make money?

The fact that there are some flights doesn't mean additional flights would be profitable. That logic would imply that airlines should add additional flights forever. Saying that Hawaii flights should be subsidized (i.e., should be a perk of an ff plan) is different from saying that those flights are profitable for airlines but they choose not to fly them.