That's going to be a good standard for a few years, until chatbots are too sophisticated for us to expect average adults to be sufficiently skeptical of their arguments.
I see two weaknesses in this argument. First, you're assigning eventual superpower-like intelligence to these AI bots. I see this a lot and I feel like it's rooted in speculation based on pop-culture sci-fi AI tropes.
Second, restricting adult access to "dangerous ideas and information" is a slippery slope. The exercise of speech and press that the British considered to be treasonous preceded the American Revolution.
