Quite true.
I suspect the reason is similar. The dominant group in the South were slaveowners, who to a very considerable degree based their lives on working for the defense and expansion of slavery.
Most northerners, OTOH, just wanted to get on with their lives and have the whole issue go away. There were exceptions, of course, the abolitionists. But right up to the outbreak of the War, abolitionists were wildly unpopular in most of the North.
Few conservatives derive their sense of personal worth from politics. Sort of by definition, we believe other things are more important. Government, and politics, should be limited. Liberals and radicals, OTOH, have no governor on their desire for power. Of course they routinely move the ball in their direction.
Sometimes they provoke a reaction they didn’t expect, of course. And that reaction often goes overboard in the other direction.
“Most northerners, OTOH, just wanted to get on with their lives and have the whole issue go away”
The North had large population of 48ers, European radicals from the failed revolutions of 1848. 48ers were one of the founding groups of the Republican Party.
They were far from peaceful, many having fought in revolutionary armies. They were as enthusiastic for war as the abolitionists. A large number served in the Union Army and several became General officers.