People rarely announce irrelevance unless the relevance has occurred to them. The Business Plot’s pretext was that FDR’s health was failing and he should be reduced to a figurehead while someone else ran things. Setting aside whether any current concerns are warranted, the parallel to recent 25th Amendment and cognitive decline arguments against sitting presidents is obvious enough that ‘no relevance for today’ seems to be a bit of a misread.

From your comment, one can only guess you may not appear value learning or history. I hope that's not the case.

Smedley Butler, while the recipient of 2 Medals of Honor, became exhausted by being used as a tool to kill and oppress people in other countries on behalf of US foreign policy that largely consisted of the interests of US companies. (Monroe doctrine, colonialism, etc.)

"Those who fail to learn from the mistakes of their predecessors . . ."