I just looked at a few of these for the services I use. So far I wasn’t able to actually opt out of anything. One service resulted in an error, the rest are just links to their policies where I couldn’t find any actionable links to do anything just them explaining that they’ll keep sharing my data. One explained to me how to unsubscribe from their mailing list with a screenful of text. So “Simple” is not what I would use for these links.
Hmm, I wonder if that opt-out error is by design? "We offer the opt-out so that we are compliant. It's not working? Hmm, it works fine in all of our testing. One moment while I look into this." <checks personal facebook feed> "Yeah, it's working on our end."