From the linked press release:

For example, when creating an account, minors below 13 can enter a false birth date that makes them at least 13 years old, with no effective controls in place to check the correctness of the self-declared date of birth.

Meta’s tool for reporting minors under 13 on the platform is difficult to use and not effective, requiring up to seven clicks just to access the reporting form, which is not automatically pre-filled with the user’s information. Even when a minor under 13 is reported for being under the age threshold, there often is no proper follow-up, and the reported minor can simply continue to use the service without any type of check.

What I don’t understand yet is why there haven’t been any independent cybersecurity experts capable of finding a backdoor in WhatsApp. How hard would it be for an expert without access to the source code to find one? Are any independent entities monitoring WhatsApp’s security at all??

This edit is really well done.