I tried to remove myself from all of Facebook's Audience-Based Advertising lists - the ones where companies upload lists of people that they want to target with ads.
I'm on over 300 lists. Removing myself from each one took 6 clicks. I tried to automate it with Selenium, but their bot detector caught it and banned my device from opting out of any lists (!)
Even after step 3 three above, I have to enumerate and curl each unfollow url, at some undefined rate limit.
So maybe 5 minutes of work to complete all the steps? ~300 followees to make scripting the chore worth the effort?