> I am here to express my ideas and opinions

If that is true you shouldn't have any objection to a rule against letting a chatbot express your ideas and options for you. Express yourself, because asking a chatbot to do your thinking and writing for you is not a superficial thing.

> But if we start ignoring ideas and opinions and instead focus on superficial things like how they are written or communicated, then the whole point of HN is lost.

How a message is communicated matters and always has. Even before this rule, I could express opinions here in ways that would get me banned from this website, and I could express those exact same opinions in ways that would not. Ideas and opinions still matter, but so does how we communicate them. It's a very small ask that you express your own thoughts in your own words while participating here.