I summarize it for you by this way BH acts when it is associated or wants something.
BH invested in YG plus + means that they can also make decisions about that company, that does not mean that YG does not receive their money for distributing the merchandise of BH artists, but also BH can make decisions with the distribution of YG artists and BH labels and in the future may be brought to staff for BeNX Corp. they don't care if BP or Treasure join Weverse.
Imo, I doubt BH will have a say in the control of YG plus. It is BH who approached YG plus for the deal. YGE is not stupid to give BH some level of control over YG plus.
This is basically about distribution.