Of course it doesn't work.
Everyone knew it when these sort of measures were first discussed here way back when and everyone knew that they would be bypassed as soon as they were implemented.
But politicians, lobbies, and everyone else who gains from this do not care.
Im not surprised, the Plattforms have 0 interest in kids not accessing. If they could make money from this i would bet my left Hand 99.5% of kids would not manage to enter.
FaceID works pretty good. I dont see any law of physics / math forbidding a proper biometric, privacy compliant age filter to work at scale.
Why do you infer that it doesn't work?