So you heard it, but did not listen to it - there’s a difference. To address this single point you (and that article) have cherry picked out to try and use as some beacon of “mental faculty loss,” Trump was talking to the cadets about the importance of momentum - finding it, keeping it, and if you lose it, recognize that and pivot. He used an allegory of a businessman he knew who lost momentum, made poor decisions whilst doing so, didn’t recognize it early enough, and thus he basically tubed his life. It was long winded (as Trump can be) and could have been shortened with the same allegorical effect, but the valid message in the allegory is clear…unless one wants to be a politically-motivated hack and try to completely misrepresent it by cherry picking a couple words and talking about it without any context.
Trump is a loud mouth and showman, we all know that, but along the lines of public speaking and mental faculties, this speech was 1000x better than Biden or Harris could have given. And that’s not so much a compliment to Trump as it is stating how incredibly bad the other options were…but I digress.