I think you miss the point of the movie. Forrest certainly does experience many things which are important to our life, but he's not responsible for them. They would have all happened and been discovered without him. In other words, Hunt and Liddy would still have been discovered without Forrest, and honest to God, they were! The point of
Forrest Gump and what makes it an important stepping stone for younger people who have no concept or desire to learn about the history of the United States during the last 50 years is that movies can actually teach them something about reality which is totally separate from vampire love, torture, wizards, werewolves, paranormal bullshite, bogus witches, etc. At my school, more teenagers probably learn about the
concepts of the reality of rock and roll, civil rights, modern U.S. political assassinations, the Vietnam War, AIDs, etc., from
Forrest Gump. However, the key is that it makes most of them want to learn the OTHER truth about all those subjects after watching it.
On the other hand, if they have a woebegone teacher such as I, they can also learn about cinematic history as well as that of other important concepts which will last them the rest of their lives, but
Forrest Gump can only be considered something hellacious if you think that it's specifically responsible for the [Current] Downfall of Western Civilization.

It's so ancient at this point that I find that difficult to believe. Besides,
Forrest Gump probably has more reality in it than most films do because there are just so many films made nowadays which have NO reality whatsoever.