Media meltdowns report of course the DRAMA/ASPECT of what this could be speculated as meaning.
I think it’s rather simple, first McCain did not want his funeral to be made into a MEDIA/CIRCUS which is exactly what would be highlighted had the two been there.
The other is that McCain actually did not like Trump and just did not want him there.
I think he respected, liked, and appreciated Sarah Palin but just did not want the circus aspect if she was there, nothing personal.
That’s life, and death.