No, it established that it's not smart to start a war with an entity that can whoop you. The South fired the first shot, they were the aggressors, and got their butt handed to them.
The South only lost the war because they ran out of men to fight it. The Union has no such problems with the never-ending supply of soldiers fresh off the boats in Boston and NY harbors. “You’re in the Army now, whether you like it or not”. When the soldiers who fought were somewhat equal in numbers, like 4 to 1 in favor of Federalists, the Confederates consistently beat them. When it got 10 to 1 the numbers were a little too much to overcome.