No it doesn't prove he is senile, it proves he can't handle foreign policy, let alone domestic policy. For proof he is senile, see one of his many quotes/actions...
"Poor kids are just as smart, just as bright as white kids"
"Corn Pop was a bad dude"
"We choose truth over facts"
"I am going to you for ask a quick favor"
"One nation, under, you know, the thing..."
And many more...