Freeing his slaves was a noble gesture, then he went on to fight for (among other things) for others to maintain the right to own other people. You don’t build statues to the loser unless you’re sending a message. A hundred years ago, there was a strong movement to remind blacks in the south that the war didn’t change a whole lot. I’ll say again, I see no need for statues to honor the confederacy. Museums? Sure. History books? Absolutely. Statues in the middle of town? Nah.
I’ve watched your conversation and for a guy who says he doesn’t really “feel strongly about it”, you seem pretty impassioned.
Slavery, more so, the expansion of slavery was the key issue that led to secession but it wasn’t the only issue.
When you say Robert E. Lee “turned his back on his country”, you show a lack of understanding of the history of that country. The United States was just that, it was a collection of individual states. State pride was far more common in that day than was national pride. It’s not surprising at all that Lee chose not to fight against the people with whom he was raised. To march into the towns in which he was raised and lead an occupying force. He didn’t turn his back on his country. He supported his state.
No need for a statue of a confederate general in Richmond and the confederate cause was undefendable, imo, but I’m the context of the time, Lee wasn’t a traitor. He was, however, on the wrong side of this war.