Why should an advanced civilization necessarily create the artifact mentioned in the article.  The conclusion because we don&#x27;t see this artifact, so type III societies don&#x27;t exists seems too strong.  Maybe they don&#x27;t create giant veils around galaxies and instead have virtualized themselves, or can simply convert matter to energy at will.  What use would there be in wrapping a giant ball of dust around a galaxy when you can convert matter directly to some other energy&#x2F;form?
Probably I think &quot;they&quot; are formless and more information based than physical.  We aren&#x27;t even sure if this reality is real or a simulation anyway, so why limit our thinking to advanced civilizations in the world as we know it?