I missed the post but clarity discussions. It's good to see some of it back.
Although there is a good point to all of these discussion being a better fit in the drama thread, here's my opinion because nobody asked.
Surrounding Aqua's graduation there is way too much speculation surrounding her reasons, but it probably boils down to the company growing and changing at a pace that Aqua simply was not comfortable with. She always seemed to enjoy gaming more than anything, and now the company is asking more. You could argue that this is what they've always asked for, but I think it was clear in the beginnings and when Aqua joined, that events and concerts were definitely more rare.
Overall with everything Niji and Idol related, maybe this is the year we see the vtuber bubble burst. Idol was the little company that could, poured tons of money into the red to capitalize on the market growth but it could never pick up enough traction until it finally collapsed under its own weight (well lucky for us they were scooped out). NijiEn was probably poisoned from early on, but that was the price they paid for trying to sow your seeds as quickly as they did. They planted bad seeds and now we're finding out how bad the contamination truly is. We're talking aflatoxin levels of cancer.