Sure, slightly more for slightly longer. You’d expect a few percent more Boomers than others, but not a cluster of 3 presidents born in exactly 1946. And there’s no reason why there was only ever 1 silent generation president. There were a ton of “greatest” generation guys, and lots of boomers, but only 1 born between 1928 to 1945.
I think a factor would also be post-way medical/life improvements that led to decreased infant mortality as well as longer “boomer” lifespans.
More of them lived, and for longer
Sure, slightly more for slightly longer. You’d expect a few percent more Boomers than others, but not a cluster of 3 presidents born in exactly 1946. And there’s no reason why there was only ever 1 silent generation president. There were a ton of “greatest” generation guys, and lots of boomers, but only 1 born between 1928 to 1945.