It’s obvious that you are hidebound to your narrative but if you’re stop blathering on for a moment you’ll see that exactly ZERO “unionists” are “imply(ing) that the North Fought the war to end slavery”. That’s a strawman of your construction.
Perhaps you don't argue with any, but in my experience, they never cease to bring out the claim that the Union fought the civil war to end slavery.
No, the Union did not fight the Civil war to end slavery, they fought the Civil war to end Independence for states that wanted out of it. The Union had no intention of ending slavery when the war began.