That is a valid question. I wished it wasn't. But here we are. I think that unless someone in the know spills the beans (with proof) this is going to be extremely difficult to determine.
Can you explain what you mean by information warfare? Do you mean someone is tweeting on his behalf?
I think parent is implying that Musk is using Twitter as a misinformation tool. Misinformation about government agencies such as health, SEC, FBI, etc.