Do you think none of the advertisers, or billboard owners, would notice or care?
Those are the clients paying the people that read this site to create and run their live visuals.
A 5 foot diameter orange dot on top of their ad is not what they signed off on. There is money at stake.
Whether you care or not isn't relevant.
Times Square is already blanketed in actual surveillance unrelated to live visuals on billboards.
https://www.earthcam.com/usa/newyork/timessquare/
https://worldcams.tv/united-states/new-york/times-square
https://www.mylivestreams.com/webcam/times-square-live-strea...
Potato, potato. If a billboard has a microphone attached, it's not unreasonable to put a visual tax on it. (Or the economic tax of using dedicated equipment. Nobody is running Times Square billboards off a Mac.)
Frankly, it doesn't matter if you would notice or care.
> Imagine an orange dot appearing on top of every video billboard in Times Square.
I don't think I would notice or care?