Yeah, no it has not been confirmed. This is sheer broken thinking on display, but let me fix it for you.
Who would deny it? Me. The article doesn't contain citations worthy of a passing grade on a 4th grade book report. He dislikes McCain? Yeah, no secret and it was vice-versa.
Re: the "they know what they signed up for" comment:
https://nypost.com/2017/10/17/trump-to-slain-soldiers-widow-he-knew-what-he-signed-up-for/
They key fact is:
“I wanted to curse him out,” Wilson said of Trump. “I asked the family to give me the phone so that I could, but they wouldn’t.”
This means the person wasn't the one on the call (third party), and secondly likely received the interpretation of the conversation rather than the actual content. This means, if we were in court, they wouldn't have the information required to be a witness. They're a receiver of a witnesses translation of a conversation which may or may to be fact. This is the type of absurdity the media is printing. It's deceitful. The only thing that is proven by this article is that the person who was upset was upset by the way someone else told them a story about the dialogue of the phone call. The quintessential 'Chinese Telephone Game'... This is not news.
But, that notwithstanding, witness testimony even from the perspective of someone being the first party in the conversation is generally not considered reliable information and without supporting facts is typically disregarded because it depends on someone's recollection of the event. That standard even applies in our lives, especially with people we shouldn't automatically trust.
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So, my question is: Why would you trust these people on what they say? Or, does it just suit the narrative you'd like to hear?