They don't have to argue anymore, this isn't the era you grew up in, that world is gone. A reporter who has a question about it won't be selected to ask one.
Except for the incoming question being on there, per your link:
> While it was notable that a potential question was written on Biden’s card, every White House press office takes scrupulous care to prepare their president for news conferences.
Except for the question on there wasn't the question that was asked. Do you understand how q&a (or for that matter court) prep goes? The question on there was an example question that they expected would be along the lines of what that person would be interested in and how they would phrase it (or what particular things they would try to attack/draw out). The article you just quoted even said that.