The title is somewhat misleading. I clicked expecting to read how someone is managing 2 mln web server instances such nginx or apache. I was curious what kind of company would claim that.
So he's not really affiliated with any company, but rather a voice for Erlang itself.
One of the nice things about Erlang's general approach is that this was a lot less painful than in many other languages. (I have no idea, though, how much work it was to get the Erlang VM itself to use multiple threads.)
And running multiple Erlang VMs on one machine - from the Erlang application's perspective - is no different from running them on several machines. The really nice thing about Erlang is that it scales across multiple nodes very smoothly.