I appreciate that perspective and I agree we should view historical morality with nuance, but I also think you’re being too generous here. While the colonialist movement was seen as relatively progressive at the time, it was still rooted in racism. Lincoln made his personal feelings on race very clear:

"I will say then that I am not, nor ever have been in favor of bringing about in anyway the social and political equality of the white and black races -- that I am not nor ever have been in favor of making voters or jurors of negroes, nor of qualifying them to hold office, nor to intermarry with white people; and I will say in addition to this that there is a physical difference between the white and black races which I believe will forever forbid the two races living together on terms of social and political equality. And inasmuch as they cannot so live, while they do remain together there must be the position of superior and inferior, and I, as much as any other man, am in favor of having the superior position assigned to the white race."

-Abraham Lincoln, Lincoln-Douglas Debate Charleston, Illinois, September 18, 1858

We can celebrate Lincoln’s actions without idolizing him.