Hello MacMacintoshMac,
Thanks for connecting with Apple Support Communities. Please be mindful of the following details when using Apple TV with multiple users:
Note: iCloud Photos and One Home Screen are only available for the Apple ID associated with the default user on Apple TV. To change the default user, see Change the default user account.
You can find more details here: Apple TV User Guide - Share Apple TV with multiple users
You're more than welcome to submit your feedback to Apple directly concerning this feature. You may not receive a response back, however, your submission will be thoroughly reviewed: Apple TV - Feedback
Take care.