A lot of them probably think 1914 was a great success, because WW1 started that year! Seriously, I have heard this mentioned many times in support of that date.
Failing to note, of course, that they did NOT prophecy a 4-year long European war but rather the end of the world!
Also failing to care that the much more significant WW2 started in 1939 and they failed to even give a clue as to that...and that about the only war connection with 1975 was the end of the Vietnamese war.