AI language models like ChatGPT should strive for political neutrality & objectivity. They certainly shouldn't pretend to be providing neutral and factual information while displaying clear political bias like ChatGPT does.
Let's say that you can filter political content out of the training data (which would considerably decrease the amount of data): defining the terms is essentiel. What is even "political neutrality and objectivity"? At what point do you consider something "politically neutral"? And what do you expect GPT or any other chatbot to reply if they get asked something politically related?
That's nonsense. I think people using GPT are intelligent enough to not be influenced by what an AI can produce as an output.