Wilson was far worse.
Wilson gave us the Federal Reserve.
Kennedy gave us United States Notes. They were printed, issued, completely bypassing the Federal Reserve. He was shot less than a year later.
I don’t see anything that bad that JFK did. Was the peace corps really worse than the income tax and the federal reserve and WWI and the League of Nations, and, and, and, with Wilson. FDR’s list of bad stuff and LBJ’s list of bad stuff is much longer.
Kennedy’s adminstration was bad for Republicans, because it helped lock Catholics to the Democrat Party for a long time.
Maybe that’s what you meant.
JFK destroyed us by replacing the American people with third world democrat voters and multiculturalism, and I have no idea what that nonsense about the Catholic vote was, the Catholic vote before 1960 was either 100% Democrat, or as some polls claim, had one exception where they voted Republican, which was in 1956.