Exploration starships that were refined with such complicated technology could be regarded as upgraded versions of the primeval warships. Their specifications were far from those of the real 'Messenger starships'.
If the messenger starship was a giant warship that could sail through the ocean, then such an upgraded version of the ancient warship was a sampan that could only cruise offshore at best. It was impossible for the starship to carry them to the 'blackhole barrier' at the center of the multiverse. The starship could only explore other universes near the Pangu Universe that were also 'backwater towns'.
Even so, the leaders of the civilization of mankind and the survivors of the primeval era still decided to make the first step in the exploration of the multiverse ocean with the technology that belonged to them. However shabby the technology was, at least 100% of it belonged to them, and it could be improved in the subsequent voyages and explorations.