That's fair enough. None of the people in that movie, nor the movie itself deserved any Oscars.
I mean, there were 3 films nominated for best picture that year that deserved it over Forrest Gump: Shawshank Redemption, Pulp Fiction, and Quiz Show were all much better movies. Four Weddings and a Funeral was even more entertaining.
And, actually I was wrong, Gary Sinise did not win best supporting actor, Martin Landau won it for Ed Wood. Which was also a travesty. They gave it to him for lifetime achievement.