It's part of the already-discussed proposal of a social media ban for under 15 year olds[1], which includes the aforementioned complete ban on under 13 year olds.

To note is that 13-15 year olds can get restricted access under parental supervision.

> Von der Leyen said that under her proposal “mini accounts” chaperoned by guardians would be granted to kids aged 13-15.

How cute.

[1] https://news.ycombinator.com/item?id=49708750