What this article and many of the comments have failed to include is the cost to operate. Each state and local areas within each of those states have varying levels of cost to use electricity. All-in-all, most profits would be negated just by the cost of mining, especially those mining machines running multiple GPUs. In the end, crypto currency mining is a financial black hole.
Not to mention the cost to break even. You spend $2,000 - $3,000+ on a rig for mining, and then when you combine electricity costs, and you reasonably only make back $1 - $1.50 a day doing 24/7 mining, you're still paying off the cost of your rig for the next year - year and a half before you break even. It could take you even longer if you factor in credit card interest on a rig like that. Nobody ever takes that into account when they decide that they want to get into mining. The money you make back in your first year of ownership is not profit - it's going to pay down that rig you bought. Once you do that, then you can start making some money.