That is also 5-ish avarice. 5's don't want to have anything extra. They are described as minimalists because the thing they hoard is their own mind, time, and privacy. The idea is, "if nothing of the world is "mine" except for my mind, which I can control, then the world can't overwhelm me or conquer me." It's also an anti-lust reaction against the integration & soul-child 8. 8's want and desire and lust. 5's want not and waste not. If you don't want anything of the real world, then you don't "waste" what is valuable, which is your own self, your time, your mind, your inner resources which you deem valuable. 5s virtue is non-attachment. This is what avarice really is - non-attachment to anything worldly. When a 5 does get attached, he gets overly attached & possessive like an 8 which is what scares him, so he rejects his worldly attachments; even his own body, and just attributes value to the thing he thinks he can control which is his mind.