It is a terrible article, I think we can all agree. Its CoreOS point is stunningly ignorant. However, Zones and Jails are a good substitute for LXC; they are

It is a terrible article, I think we can all agree. Its CoreOS point is stunningly ignorant. However, Zones and Jails are a good substitute for LXC; they are not yet such a good fit for the Docker way of using containers, which is somewhat different. But for a whole system image type model like LXC they are both great. SmartOS is doint great things with Linux compatibility, both through emulation and KVM, it is worth looking at.