Pure fantasy, at best a modern anachronism.
In fact, there was no "hypocrisy" on either side.
Confederates were clear that they wanted Africans as slaves, no "hypocrisy" in that.
Northerners were also clear, they wanted no slaves in western territories or even, via the SCOTUS Dred Scott decision, in their own states.
Most Northerners had no objections to slavery in the South where it was legal, until Confederates started & declared war on the Union.
Then the advantages of abolition in Confederate states quickly became obvious.
As for freed-blacks, in 1860, the US had about 400,000 total, half in the South (i.e., Maryland 83,000 & Virginia 58,000) half in the North (i.e., PA 56,000 & NY 49,000).
But several states (North & South) were hostile to freed-blacks and had very few.
Florida, Mississippi & Texas each had fewer than 1,000 freed blacks, while Illinois, Michigan & California each had fewer than 10,000.
Yes, the huge cotton trade made some Northern cities like New York effectively outposts for the Confederacy, opposed to the draft and blaming blacks for war.
But "hypocrisy" was never the real issue.
2nd Amendment: "Many of the yeoman Southern fighters could care less about slavery and were fighting for individual rights against yankee encroachment and for their property and land."
It's important to understand exactly how that worked because the truth of it is not so simple.
- In the Deep South, the first seven Confederate states, between a third and half of all white families owned slaves meaning, pretty much every young soldier had slave-holding family members or close neighbors and so were themselves fully invested in the "peculiar institution".
- In the Upper South (North Carolina, Tennessee, Arkansas, Virginia) the overall was about 25% of families owning slaves but each of those states had huge regions with virtually no slaves -- western Virginia, eastern Tennessee, western North Carolina, northern Arkansas.
Slave-free regions of those states remained loyal to the Union and suffered oppression from Confederates.**
Regions with more slavery sent their sons to fight for the Confederacy. - As did slave-regions of Union states like Delaware, Maryland, Kentucky & Missouri.
But the average in Border South states was only 15% slave-holding families which kept them out of the Confederacy and provided more than two-to-one Union troops versus Confederates.
So the bottom line is that most Confederate soldiers (and all of their leaders) came from families and neighbors who owned slaves and were fully committed to their "peculiar institution."
Southerners who lived in mostly slave-free regions more often served the Union army.
** 1864 illustration of October 1862, when over 40 Southern Unionists hanged by slave-holding Confederates in Gainesville, Northern Texas: