The Finns had a rough go of it winning their independence from the USSR. It was just 70 years ago so the wounds are still fresh. The commemoration is more of a memorial in honor of those that served in the bitter civil war than the Norman Rockwell-like celebration that I am so used to in the United States.
Perhaps it’s the passing of time but I think it’s more the Finnish character that cuts out the pomp and circumstance of the independence day parade. Look at the Finnish flag. No noisy Stars and Bars, just a simple, austere blue cross.