There are a bit more details. I'll try to summarize it in short. The Daizenshuu on two separate occasions claims that there are only 4 galaxies. Without any ambiguity to whether it is plural or singular. This is of course not true, which goes on to show it is not a reliable source.
The Daizenshuu also says there are 4 areas, which goes back to how Herms explains it. According to the Daizenshuu, there are 4 galaxies in DB universe which are also called 4 areas.
According to the Daizenshuu, a galaxy is a collection of planets and nebulae. Not more galaxies, like some are claiming, which would be redundant and makes 0 sense. The claim comes from another line from Daizenshuu that says galaxies exist infinitely, which also goes to show it's a self-contradictory.
The Daizenshuu also claims that the universe has infinite darkness, suggesting that the universe is infinite in some sense. While the primary source depicts the universe as being finite on several occasions. The universe having a center, Earth being near the edge of the universe, and the representation with Super Shenron, they all by default suggest that the universe is finite. Maybe we could have had a discussion on whether all of this is possible for an infinite universe or not, but this claim is made by a source that is self-contradictory and unreliable, and hence, isn't used.
Considering that this thread has been going on for so long, I suggest it's time to close it. Elizhaa's agreement was conditional on whether we use the Daizenshuu or not, and he has not responded since I brought up the points about the Daizenshuu being unreliable. Uchiha and KLOL have since then changed to a neutral stance. Damage, Medeus and I are already in disagreement, and this is not including many more staff members who also previously agreed to not use the Daizenshuu for this.
I'd also suggest adding a discussion rule that clarifies:
"We do not use the Daizenshuu as a reliable source to determine Universe 7's size because many claims regarding universe's size and structure like the existence of four galaxies, or them existing infinitely, the universe being infinite, the afterlife being infinite, etc. have been found contradictory."