>>48633376Mostly what this
>>48634638 anon said, she carried the company during the early days and was pretty much unchallenged at the top for a really long time and developed into a bit of a spokesperson for the company, she's still involved in most major projects and still does a lot more MCing and public facing work than most others. She is reliable, a hard worker, good at what she does and not prone to getting sick or having menhera outbursts and has a fairly clean overall image, so she is a pretty safe choice in that regard. She's also known to deeply care about her friends and colleagues and tries to support them however she can, which she has shown time and again during the Taiwan incident, for instance. It's pretty clear that she's valued by both her peers and the company, so even if she doesn't formally hold a position that puts her above others, she's still in a kind of unique position. The "pillar of Hololive" thing isn't a thing people here made up, she's actually seen in this way by many, there's even a whole section on it in her pixiv wiki entry, for example:
https://dic.pixiv.net/a/%E7%99%BD%E4%B8%8A%E3%83%95%E3%83%96%E3%82%AD#h3_1At the same time, she's pretty modest about it and prefers to stay out of the spotlight these days, she never enjoyed the pressure of being at the very top and is much happier where she is right now. She gets to do what she wants at her own pace without too much pressure and has a fiercely loyal fanbase. At the same time, she herself is very grateful for the opportunity she has been given and is very loyal to the company itself, so she does her best to contribute to its success wherever she can.