Nope. Something can be written by a human being of immense intelligence but not deserve taking seriously, if (for instance) it was written as a deliberate attempt at deception or a joke.
In this instance, you told the AI to argue for a particular conclusion and it did. If the conclusion should happen to be wrong, then no matter how clever the AI might be its arguments can't actually be all that good.
(I don't think GPT-4o is in fact a system of immense intelligence unless you use a really idiosyncratic notion of "intelligence", for what it's worth. That doesn't tell us much about whether its successor's successor's successor might be one.)