You're correct: certain facial features always stay the same, such as interpupillary distance. But you know what? On my selfie, I'm blind in one eye: ain't that a shame for the poor algorithm eh?
Besides, they're not the police: they don't have a database of facial features of everybody in the world. So even if they do have my exact facial features despite the makeup, what are they gonna match it against?
It would only be of use if they went to the Dominican fuzz with my selfie, who then would have to contact the police in my own country, to have a chance to cut through my disguise. Good luck with that...
And at the end of the day, the aim isn't necessarily to be 100% impossible to identify: it's just to make it as hard and least cost-effective as possible for the fucking data brokers who sell our lives for pennies on the marketplace.