>>926907There's a couple bits of speculation on it
>language barrierProbably the most likely, since outside of large collabs she's only really worked with english speaking holos, though this one is countered a bit by the fact that she apparently talks with Shion on discord, and I don't think Shion can speak english on a conversational level, if I'm wrong here please correct me though.
>rabbid fanbaseMain idea here is that either her or Cover saw what happened with the Among Us collab where rabbid gura fans decided to attack Lofi and decided to halt future non-EN collabs. Main counter argument to this is that the same thing happened with Ame's fans going after Haachama and Ame still streams with non-EN holos on occasion, though if Gura decided to halt them herself then this is likely a moot point.
>Hololive/Gura moderating her contentOne of Gura's biggest revenue streams is her monetization, so either Cover or Gura dropped collabs outside of EN to play it safe, since it's harder to control things when you can't understand them/have to pay attention to multiple languages.
There's other theories outside of this, but I have to sleep so I won't list them.
