And yet the topic of this thread clearly stated Stephen Smith "explains why," and like usual, you're too lazy to watch a video in its entirety.
He is suffering from obvious mental decline, often speaks in word salad, is clearly compromised by foreign entities, and is mentally & physically unable to perform his duties. Evidence is in the fact that he cannot even go on the campaign trail, let alone debate anyone on a live stage without special cheat sheets to walk him through answers to pre-known questions (same for live press conferences). All of these factors speak to his age. He is too old to be a sitting president, and congress should have invoked the 25th amendment (forced resignation due to incapacitation as a result of mental defect) more than a year ago to oust him.