The problem is history is complex. Now days people want good/bad instead of the nuance. Lee wasn’t all bad. He didn’t fight for the confederacy. He fought for Virginia. Had Virginia stayed in the Union, he would have led the Union army.
The civil war has become a meme. It really was about the states. It’s why the 14th amendment took powers from the states which gave us more stability. The recent court decision talked about the 14th taking powers from states.