Platforms can figure out what ads you should get based on tracking from incredibly specific coincidences of IP addresses and browser user agents. I'm sure they can figure out what ads should not appear next to what content.
If people don't want to be on a site with someone, even if they don't have to interact with them, then that's just too bad. I will always favor local, positive rights over global, negative rights.
The right to > The right for somebody else to not.
I'm a value utilitarian. I think society should be organized so that humans can follow their interests. As such, I believe it is counterproductive for people to have an interest in others not following their interests; that's an interest that reduces net interest satisfaction rather than raises it.