I would one want to use this?
Why limit data access to iCloud at all?
MacBook Air 13″, macOS 13.2
Question marked as
If you are asking about Manage web access to your iCloud data - Apple Support, the answer is provided in its opening statement:
"For additional security and to give you more control over your personal data, you can choose to turn off web access to your iCloud data so that your data is available only on your trusted devices."
Otherwise, please explain your question so that we may better understand your concern.
Writing an effective Apple Support Communities Question - Apple Community