Milo and Anglin: The Scylla and Charybdis of the Alt Right

There has been much written on the subject of the dangers or boons of Milo Yiannopoulos and Andrew Anglin to the Alt Right. I would rather we avoid them as much as possible and will explain why; but firstly, I will give a quick run down of the perceived positives and defences of the two that I have heard mentioned by other Alt Right commenters.