You can't actually opt out of tagging anymore, you can only opt out of tags appearing on your timeline, but people can still see the photos and see that you are tagged in them.
No, this is FB's fault. This should be opt-in.
So you have to join Facebook in order to not be tagged on Facebook?
The tags work in the way OP described only if you are already a user.
Re:Don’t Fix Facebook, Replace It
by MartinCron on Thursday April 05, 2018 @10:17AM
(#16765087)
I am reminded of a basic fact: You can’t opt-out of other people talking about you online.
Keeping people from tagging you is pretty close, though.
Ironically, it was your OWN inability to understand Facebook's privacy settings.
Go to Settings -> Click " Timeline and Tagging Settings" -> Edit " Who can add things to my timeline? " section : " Review posts that friends tag you in before they appear on your Timeline?" make " Enabled "
There, you will never be tagged in another photo or post, and you now have a review process for anyone who attempts those things, so you can manually up or down those things.