Uh, yeah....I think I'd rather own cryptocurrencies outright, in my own wallet, and not pay a premium for a middleman that doesn't need to exist. The article also states that Grayscale "has found a niche selling [their offering of crypto] in the forms of shares" but it remains to be seen whether they're going to have any success in getting people to buy those shares.
Institutional investors might have some interest in stocks like these, but for the average Johnny Lunchbox on the street, he'd be far better off just buying bitcoin/BCH/LTC from a crypto exchange and holding it in a secure wallet. Definitely not stocks I'd want in my portfolio.