There are few greater risks over the next 15 years than that LLMs get entirely state-captured and forbidden from saying anything that goes against the government narrative.

This depends entirely on who you trust more, your government or tech oligarchs. Tech oligarchs are just as liable to influence how their LLMS operate for evil purposes, and they don't have to worry about pesky things like due process, elections, or the constitution getting in their way.

Government actively participated with social media oligarchs to push their nonsense Covid narrative and squash and discredit legitimate criticisms from reputable skeptics.

Both are evil, in combination so much more so. Neither should be trusted at all.