I don't think anything has changed, but COPPA isn't the only regulation with age requirements. GDPR also includes age requirement (
https://gdpr-info.eu/art-8-gdpr/).
From a quick read of the article, I think this is intentionally going beyond the requirements. They obviously feel that this will build a safer and more trustworthy environment at the expense of other issues, including a loss of users who don't want to provide identity.