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Discord Users Threaten Exodus Over Age Verification Face Scan Controversy
(www.newsweek.com)
This is a most excellent place for technology news and articles.
It's not being used because the real goal is to make it impossible to use the internet without handing over your ID, so that governments can know exactly what you do online. It goes along with all the attempts to ban or backdoor encryption including VPNs. They want to read every message and know who sent it and to whom.