Sure. But those many works have affected the discipline of AI development. There's an entire field of study on AI ethics and alignment. But those are affected by the combined effects of many works and authors. Planet of the Apes really is unique in that it is really the sole example anyone would bring up of why you shouldn't experiment on apes to try to make them more intelligent.

And to my knowledge, no one has attempted to engineer apes to be more intelligent. Obviously there is simply less economic drive to do so; it's easier to be concerned about ethics when there's not a ready path to profitability. But if some geneticist tomorrow puts out a paper proposing that we tinker with chimp DNA to make smarter chimps, I can guarantee you every single headline will reference Planet of the Apes. It's similar to how you can't right an article about resurrecting the woolly mammoth without throwing in a reference to Jurassic Park. Some singular works of fiction really do have a substantial effect on how the public understands an entire field of research.

To my knowledge, no one has ever actually tried to engineer smarter chimps, though I assume there might actually be a lot to be gained in terms of scientific knowledge by doing so. We could probably learn quite a lot about the evolution of language and human evolution in general by trying to experiment with engineering smarter apes. But to my knowledge, no one has ever done so. The lack of profit is obviously a big factor, but I guarantee you, accidentally creating Planet of the Apes would be on the mind of anyone seriously contemplating that sort of scientific endeavor.