The journalist points out a difference between the two cases being compared: lying actively encourages a false belief, while withholding information simply doesn’t prevent a false belief. She uses this to show that a conclusion based on the cases’ similarities shouldn't be drawn.

The journalist’s conclusion isn’t about defending the distinction between lying and withholding information. Instead, she uses this distinction to counter others’ argument. Also, she never claims that the distinction is controversial, nor does she offer an example of it.

The journalist defines lying, but she claims that lying does not apply to all the cases under discussion. Specifically, it doesn’t apply to journalists who withhold information in interviews in order to elicit new information.

The journalist does refute an argument, but she doesn’t do so by appealing to a counterexample to undermine the ethical principle of lying. She accepts that it’s unethical for journalists to lie to get a story; she just disagrees that withholding information is like lying.

The journalist compares a case in which the moral principle of lying applies (journalists lying to get a story) to one in which it doesn’t apply (journalists withholding information). However, she doesn’t do so to defend the moral principle, but to undermine others’ argument.