I did some digging and there's no real basis for most of these claims. The company seems to be backed by a weird commercial OSS VC, with a founder with a hand in crypto bullshit, but that doesn't mean that the application is insecure. Also, for what its worth, I couldn't find any links to China outside of the rendezvous server thing.
I checked the wiki page edits - not sure which one you're referring to but I didn't see anything malicous or suspicious.
This article summed it up well https://hackaday.com/2024/03/01/this-week-in-security-forksquatting-rustdesk-and-mms/
TL;DR it's not an issue