That is absolutely true of the chatbots we have access to but I suspect there are people working towards these ends, including all the big names in the field, major win for their company if they manage it. But even then, I have yet to see a model that could naturally handle subtext and context, they struggle even when dealing with programming languages where these things are far simpler than they are in human language.

There is also the problem with how easy it is to back them into a corner where they start acting in very unnatural ways. This would arise when challenging them on their humanity and most people would pick up on it and craft their challenges around it until it fell apart because that is how people work in such adversarial situations.