New Gamertag update

The new gamertag system is still updating and not all games currently support the new gamertags.

Information on the rollout can be found at
https://support.xbox.com/my-account/manage-gamertag-and-profile/gamertag-updates-faq

That's part of the new gamertag update. https://support.xbox.com/my-account/manage-gamertag-and-profile/gamertag-updates-faq

If you create an offensive or inappropriate Gamertag, it will be replaced with a new automatically-generated Gamertag. If your Real Name content is deemed offensive it will not be changed, but the ability to share it with others on Xbox Live will be
disabled.

For more info: https://enforcement.xbox.com/en-US/home/staysafe#topic9

To add to what has been written already XXX can be deemed to represent sexual content, it was used many years ago as a rating for adult films.

Hi iPsychoZombie,

Thanks for reaching out to us in the forums with this question about the new Gamertags. In regard to not seeing your new Gamertag on the Xbox or on Xbox.com,
you will see the new gamertag format on console later this year after a system update. As we transition our gamertag system it will take time to update all experiences.

For further information concerning the new Gamertag format, I recommend our support article entitled Gamertag update FAQ.

I hope that this helps you out!