- Read some Kennedy books though. 1) He prevented a very very very very very real prospect of a nuclear war. That Cuban Missle Crisis was no joke. Literally every advisor he had, every single one, was telling him to start war. He was the only one that went along with his own gut assuming that Kruschev was bluffing. No one believed that. This is even more important because Kennedy ran his entire campaign on the notion that Eisenhower was weak on communism and that even the slightest Communist expansion, no matter how remote, was a grave threat to our security. Massively impressive call on his part as President to do the right thing when his past self, and all his advisors (and obviously his opponents) were skewering this exact kind of decision making.
- Alot of the impetus for the Civil Rights act came from the nation coming together after his assassination. That's because he essentially started the process and lit the fire which LBJ carried home. LBJ literally in his first speech as President basically said as much. The notion that "For Kennedy we have to carry to the finish line the issue of Civil Rights that he championed". Politics, sure, but him reaching out to Dr. King in Jail was the beginning of the Democratic Party ridding itself of the cancer that is the southern white conservative voter. Also, without Kennedy getting shot we probably don't have the quagmire that is Vietnam either.
I mean, he's overrated, if preventing nuclear war, civil rights, travelling to the moon, the peace corps, and an entire generation of people being interested in politics don't really matter much.