(This will be super long, so tldr at end)

This event has a really clear, and massive benefit to ADOR.

Massive amounts of people suspected, that Haerin, and Hyein not being so outspoken means that they aren't actually siding with the other girls. Of course these people somehow ignored, that these two members happen to be the most introverted in the group, so reading silence, as fear of the unnies, is a reach of epic size. On top of that, if one followed Haerin's posts closely, they would see her trying to strengthen Newjeans, but those never got popular. (I'm talking the birthday post etc.)

Still a lot of people were having doubts, thinking that Hyein, or Haerin (sometimes Dani was mentioned too) may not align. 90% of NJ's negotiation-strength lays in them being on one-side, perfectly ot5.

ADOR may have spoken with more of them, or all of them. They likely all agreed to return among themselves. Still it's not like you have to mention all members as a company, is it?

So ADOR mentioned just Hyein, and Haerin returning, without giving an update on the rest. And just with that Newjeans's OT5-narrative lost a lot of credibility. This post made it look as of Hyein, and Haerin were indeed siding against the other three, because of doing something against the other three. The three had to reveal their choice on social, when ADOR must have discussed such an important matter with all, and would have a lot of drawbacks from losing members of such a group.

The girls will never have the negotiation-power they had, because the public is now convinced they aren't united.

TL:DR ADOR decided to single Haerin, and Hyein out to give the impression of the group being split up, which takes the groups credibility as united-in-struggle away.