Worth remembering Biden (81) is only 3.5 years older than Trump (78). So, if Biden’s too old, surely that means Trump is too?
Surely, it’s health rather than age that’s key. Though, every other US president has finished their term in their 50s or 60s, other than Reagan (77) and Eisenhower (70).
And any President can die in the job, whatever their age. As Joe Biden knows only too well, as do Caroline and Patrick Kennedy, death can happen at any age.