Ives was quintessentially American: he was a big time composer but he made his living working as an insurance company executive. And he wrote on American themes, about solely American holidays and used a lot of folk and popular music that just hangs in the air in America.
I am not a fan of most of his music. He is too modern for me. I prefer something more melodic and more tightly structured. A little more entropy and this symphony would become just a rehearsal session. But its theme is the theme of the day: Thanksgiving. And let’s be thankful for that.