>>97249297tl;dr hanamori bad. steal opportunities and sponsorships from the rest of the branch and give it to themselves to such a ridiculous extent that it's a wonder nobody noticed it sooner.
Longform
basically nepohires with a history of crybullying on twitter.
A very, rough cliffnotes is that they all used to be part of an indie group called Hanamori along with Claude, Shu, and a few others.
In NijiEN, Hanamori seem to get unnatural levels of support, promotion, and sponsorships compared to the rest of the branch. (Luxiem aside, but even within Luxiem Shu is the only one with a full size statue)
Elira in particular got somewhere from 3 to 4x the amount of sponsorships and merch opportunities as Pomu, her genmate, or Selen, the co/top dog of the girls in terms of raw numbers. Enna gets around double Selen or Pomu's opportunities despite being notoriously lazy and refusing to put any kind of effort into anything, and not even having the numbers to back up that kind of pride.
It all leads to a conclusion that Elira, as well as the rest of the hanamori members in EN, are clearly getting some sort of favoritism from management, and/or they're intentionally kneecapping the other members in favor of themselves.
Big, big examples include Elira randomly being in the Sanrio collab despite Selen repeatedly saying it was the one collab she wanted when she joined Nijisanji, Maria and Fulgur getting the Razer collab with themed gear based on them, and most blatantly, the HYTE collab where Enna, Elira, and Rosemi were the only ones being sold, while none of their fanbases would even give a shit about PC cases.
It's even worse in hindsight when HYTE revealed that they were specifically trying to work with Selen, and immediately cancelled the Nijisanji contract in favor of working with Doki.
We know now that it's not even the first time an organ was specifically requested by the third party, only to get denied. Pomu quit Nijisanji because a goddamn record deal was offered to her, and Nijisanji denied it, likely because some of the board members owned competing labels/bands.