That's utter hogwash!
Shipping to Hawaii is prohibitive in cost, with few exceptions. So, shopping on line if you live in Hawaii is absurd. A tiny camera battery that costs $10 generates a $45 shipping fee. As for saving on taxes...no...never...Hawaii has ALWAYS taxed the internet. Anything that moves is taxed.
How does one save on gas by buying online? Who is home all day waiting for FedX or UPS? You have to get in your car and drive to their offices and pick up the item.
Besides, is everyone so cruel as to try and kill all local businesses? STUPID, STUPID. One should always support local businesses. Never shop online unless absolutely necessary.
There's also the great hassle factor if the item arrives in bad shape, used when supposed to be new, not as advertised, you simply don't like it, etc. It is very simple to return it to the local merchant and hell to return it to an online merchant.
When governments fear people, there is liberty. When the people fear the government, there is tyranny. Thomas Jefferson