“Don’t cherry-pick please. He also said that if he could end the war by freeing all of them he would.”
The poster made his point, that Lincoln didn’t care one iota about the slaves; to him, they were nothing but a political commodity to be used or expended as circumstances dictated. Lincoln waged war not to free the slaves, but to restore the Union and the revenues associated with it.
Only because he didn't bother including the last sentence in the letter.
...but to restore the Union and the revenues associated with it.
Hogwash. Federal tariff revenues had already almost doubled by 1863. Without the South.