It's just a smokescreen attempt to make him appear less relevant because of their IPO filling. Bitmain's extreme bias towards BCash might turn out to be a problem, and then mainly Jihan with how he is the public face of Bitmain, and this could very well be a convenient way to tackle any potential doubts on the side of the regulators.

Don't forget that Jihan has to ask for board approval to use Bitmain resources to stock up on BCash, and that approval was given to him more than once if you look at their accumulation history. In other words, this is just standard media circus.