These are excellent points. A few of them I would have a small bit of disagreement over the perceived negativity, but they are too small to bother with. I would

These are excellent points. A few of them I would have a small bit of disagreement over the perceived negativity, but they are too small to bother with. I would say it's more like there is not enough benefit to outweigh the perceived, possible, and/or actual negatives. But that seems a silly statement to make in of itself. I think it revolves what your website actually is and how deeply invested you are in your URLs.