Ive read yoir article, and plan on rereading when i get on a bigger screen, and i respectfully disagree, to a point.
Is mining profitable? Yes, but it does take time to regain your initial investment. For someone like me whos goal is passive income, mining does make sense.
Also, id like to add, cloud mining will always be more exspensive than hardware mining, and its hardware mining that i will be pursuing.
Another thing i would like to say Im not putting anyone down for buying and holding, whether it be btc or an alt coin, as i do believe you will make money. But i prefer to mine btc/alts and hold, then buy and hold.
As i pursue hardware mining in the future Ill keep you updated on roi and my