On the contrary, to quote Wikipedia’s article on him:

en.wikipedia.org/wiki/Larry_Sanger

Since Sanger’s departure from Wikipedia, he has been critical of the project, describing it in 2007 as being “broken beyond repair”.[8] He has argued that, despite its merits, Wikipedia lacks credibility and accuracy due to a lack of respect for expertise. Since 2020, he has also accused Wikipedia of having a left-wing and liberal ideological bias in its articles.[9][10] Sanger’s effort to change Wikipedia was seen by some as part of a right-wing attack on Wikipedia.[11][12]

Which lines up with external articles by him I’m reading, including his take on Grokipedia: larrysanger.org/2025/10/grokipedia-a-first-look/

Of course Wikipedia is biased (probably western/liberal biased), astroturfed, and such. But calling it something like a CIA misinformation tool falls into “perfect is the enemy of good” at best, and sounds more like the efforts to tear down its credibility from actors who don’t like what it says abou them.