Natsumi Moe said on her last Twitch stream (VOD got nuked) she was planning to "graduate" soon, and won't actively be streaming from a date coming soon next year, but will still upload content on YouTube sometimes. It's not happening any time soon but she has a date in mind and could very well be happening next year.

She basically said she was getting tired of being a streamer after so many years and needed to move on and do something else. It's not a case of her going corpo and reincarnating or anything, she just wants to do something else with herself after like five years of making content.

I get she basically turned into a 2view and wasn't really popular in later years as people found others like Hololive, but shit sucks when you find out more of the OGs are going away.