Yes, I read that document that, for sure, is wrong other than old (4 years ago).
It says the only guests supported are Windows guests, but the hyper-v wizard lets you create an Ubuntu 18 guest by downloading a pre-configured image, and this works flawlessly. So they miss one of the features of their own system.
For the configuration part, as I wrote in the first post, all the settings on the host are as described in the article you linked.