I mean, Hitler was not in his late 70s, but his mid fifties. Chances were quite good that, were it not for the Allied invasion and his cowardice, he could’ve lived naturally another ten or twenty years (his health was shit but that was mostly down to drug use, and hey, Ozzy Osbourne is still alive, it could’ve happened), so yeah he kind of had to be stopped.

Donald Trump, the way he eats, you think he’s going to live past his term? That he’s going to be lucid enough by the end of it, to try and hang on to power? Nah, man, by that time they’ll have convinced him to live out his remaining time (if he doesn’t die in office) at Mar-A-Lago after endorsing a Heritage-Foundation-approved successor for the 2028 race, and hope his endorsement carries that candidate to victory. That way they don’t have to try and remove the two-term limit. They kiss his ass, make him feel like a living god-king, maybe even have him meet with said successor on a regular basis to placate him into believing he still actually runs things.

Now, could they try repealing the 22nd amendment? sure, but it’d be far easier to convince an 82 year old senile narcissist he’s still the BMOC pulling the strings. It also has far better optics.