All these wannabe Bitcoins are copycats, which aim at earning profits by their creators. But this should have been expected just as with altcoins starting to spring up a few years ago en masse. In essence, it was only a matter of time until someone made another Bitcoin instead of creating an altcoin based on Bitcoin codebase and protocol. I suspect (actually, hope) these copycats (well, most of them) will die long before physical limitations such as disk capacities kick in. They are not intended to be a genuine means of making transactions (whatever their creators claim to the contrary). They are no more than profit-making machines exploiting Bitcoin's name while it is still worth something

In short, expect more to come