Richmond isn't the only place in the country with statues of Confederate losers.
I'm also assuming you realize most of these statues weren't put up after the war ended (as in right after) but rather in the 20th century after Jim Crow laws were enacted to romanticize the Civil War and remind blacks of their place in society. I'm also assuming you realize Robert E Lee was vehemently against statues of himself or the Confederacy being erected as he said they served no purpose beyond continuing strife. Yet trash racists put them up against his wishes. In an ironic sense, you could say we'd be fulfilling his wishes by taking them down.
https://leefamilyarchive.org/papers/letters/transcripts-UVA/v076.html
As regards the erection of such a monument as is contemplated; my conviction is, that however grateful it would be to the feelings of the South, the attempt in the present condition of the Country, would have the effect of retarding, instead of accelerating its accomplishment; & of continuing, if not adding to, the difficulties under which the Southern people labour. All I think that can now be done, is to aid our noble & generous women in their efforts to protect the graves & mark the last resting places of those who have fallen, & wait for better times.
Ultimately, if your point is to educate then the statues should be doing so. The Confederate memorial statue in Roanoke they're going to take down isn't an educational tool. The Germans left places like Auschwitz up as a reminder of what happened. It's not celebrated, it's a somber tool used to show people how horrifying people can be to one another. Nobody is at Gettysburg asking them to repurpose the battlefield, they have tours there, people learn about how a bunch of radical extremists whose main goal was the enslavement of so-called inferior peoples nearly tore this country apart trying to achieve their goal. These statues are a glorification of men who in no way, shape, or form need glorifying and certainly not the cause they fought for either. Like I said, take them down and put them in a museum and then they can be used to teach.