I love Trump. Objectively though I do think it’s fair to assume that after having a dementia riddled incompetent President age will be a real concern people have and someone will make that an election issue and it will resonate with some ... maybe a lot ... who don’t want another President in his 80s for a while (Trump would turn 80 while in office).
It’s an easy issue that the Democrats will use against Trump also if their nominee is someone younger, which is almost certain. I don’t think the country as a whole is going to want someone pushing 80 in 2024.