I've seen a few in Lakeview but my experience hasn't been entirely the same as yours. I haven't noticed blinding lights at night. They seem to move relatively slowly and cautiously.

I came upon one as I was jogging last night and was worried about getting around it. It, or someone driving it, seemed to notice me coming and it waited at a spot where it was easy to pass.

That said, these are a bad idea. Like another commenter mentioned, these are going to obstruct people with mobility issues or devices, or obstruct everyone when all but a narrow strip of sidewalk is snow and ice.