I think this rumour is largely false, and mostly clickbait.
DJI simply owns a majority stake of the company, that doesn't mean they bought it or owns it or whatever.
There's also other issues, I don't think the Swedish government will just let the Chinese buy one of their companies, I don't think the US would allow that either. Unfortunately we don't have a free market. Hasselblad owns patents and designs of technology that goes far beyond their excellent camera systems.
There are certain companies that the western government wouldn't worry about, but one that plays a huge role in camera and optics simply isn't one of them.
Yeah, simply a rumour. Time will tell however. I take these xxx bought yyy with a huge grain of salt.