It refers to this: https://www.reuters.com/markets/deals/musks-xai-buys-social-...

> "xAI and X's futures are intertwined," Musk, who also heads automaker Tesla and SpaceX, wrote in a post on X: "Today, we officially take the step to combine the data, models, compute, distribution and talent."

Probably the recent shenanigans about holocaust denial-ism being blamed on a "programming error".