Disagree. The debate showed that his communication abilities are nearly gone, but his mind behind them is intact, just slower than it was.
Which is a really unfortunate position for him to be in. It can't be pleasant. He's not suitable to lead the country for another four years for sure. The country needs a leader who inspires people, and no one on that debate stage was that.
Sorry, but this borders on gaslighting.
It's not that he "didn't have the chops" to win the debate, it's that during the debate he clearly demonstrated that his mind is gone.