No you don't, the compliant user will up date this information as necessary.

The law says the user provides the birthdate or age and the bracket is derived from it

I wish the legislators thought about the privacy implications of this, because anyone can learn your birthday by watching when the category changes.

The brackets are a few years wide, so it could take a bit of waiting. But yeah I’d consider setting a slightly different day/month for a child if I was paranoid.

I guess you could also make the bracket selectable instead of requiring the age

> The brackets are a few years wide, so it could take a bit of waiting.

There are millions of people moving between the proposed age brackets every day. This is a DoB-gifting firehose to ad tech.

Ad tech doesn't need this feature to know roughly how old you are.

Also, various sites were already legally required to gather this information anyway to know if someone is over or under 13.