This is why VR tourism should be a thing. If we all just do it in VR then we would not be harming these national parks. We wouldn't have to trash it. Yes, experiencing it live and first-hand is incomparable to seeing it in virtual reality, but unless we learn to discipline ourselves and stop trashing these national parks, there wouldn't be anything Instagrammable left for us to take pictures of.
If you banned personal cars into national parks I think you would have a lot less problems. It's kinda sad that people treat these national treasures like a cheap amusement park...