They have hundreds of rules to follow from showing skin, to the games they play, to stuff they can and cannot say on stream, to rules regarding collabs (remember than until recently Nijisanji was BANNED from collabing with EN, something the talents had to fight for for months). One of those very very well known rule is that the Minecraft server is a strict no boy allowed area. So there is at least SOME rules regarding male collabs.
Now, Dimitri comes in and the holostars collabs start to get rarer and rarer. To the point of Armis debuting with no watch along, no twitter follows, no mention on stream no anything. Very different mood than Tempus HQ's debut.
And we're supposed to say "no, nothing changed, move along"?