If the only source for something was TASS or the CGTN and you couldn't find any other source, it would be treated as false until proof of the contrary.
The burden of proof is on the person claiming something to provide a credible source. The CIA is not a good source for things that conflict with US interests.
All four of these organizations are under the direct control of the US State Department. Seems to me that this is just shuffling around to obfuscate who owns what. It still uses the same tactics, is directed by the same people, and operates under the same name, it's just a game of shell companies.
However, I never claimed it was still directly controlled by the CIA. It's still controlled by the State Department, and is indeed founded by the CIA, as there is continuity between the CIA and the modern RFA. By the standard that you are requesting, that is to prove that the CIA is still directly connected to RFA right this present minute, it's not realistic to provide such proof. However, there is proof that the RFA is still commanded by the same people as under the CIA, and that is sufficient.
I'm willing to accept that the information might be true, which is why I'm asking for a reliable source. If some information is only reported by a source that is very interested and was created for propaganda, it is likely false.