I think that if Wood Apes can do the things that y'all claim they can do. Then a language is not a huge step. I mean clearly they are not animals. No animal could avoid being killed and found for so long. Leopards are hunted and killed and they are probably the most elusive large animal in the world, they have been getting killed by locals for thousands of years, long before guns. Humans have been attempting to avoid detection, and they are clearly the smartest creature on the planet, but they still get caught. Wood Apes probably speak several languages, since they must have super-human intelligence to evade our technology and weapon making ability, and group hunting tactics, and traps, and can evade highway collisions, when humans can not.