This new method would ensure that you can recover your account even if an intruder has changed the user name and contact data. To this end, Instagram offers protection that ensures that a username can not be claimed during a "period" after the change of an account, that it is not possible. piracy or voluntary modification.
It is not certain that in-app recovery is widely available, although user name locking is now available to all Android users and it is deployed for iOS users. However, the goal of the new recovery process is clear: Instagram hopes that you will eventually be able to recover an account entirely within the app, rather than relying on the security team.
The timing could be vital. The security of Instagram accounts has recently been a sore spot for exposed passwords and escalating intrusion attempts. This will not prevent misuse of accounts, but it may discourage perpetrators of crimes seeking to exploit the vulnerabilities of the current recovery approach.