Hi Mustafa Kemal AKKUŞ,
Welcome to Microsoft Community.
Based on the original description, we understand that you are experiencing anxiety related to account security and device security.
At this time, the information in the "Sign out everywhere" related descriptors may be inaccurate in comparison to the actual intuitive experience.
This experience may indeed cause some concern for users of the product.
Perhaps the original authors of the article were thinking in terms of the status of a "Microsoft account", the premise of "trustworthiness" and the need to "use Windows itself".
From a certain point of view, if the option includes a complete logout/blocking of the entire device, this could backfire on the original device, thus creating a dilemma.
Often, another common direction to improve account security is to use an additional method for logging in, which is an alias.
Add or remove an email alias in Outlook.com - Microsoft Support ****

Or, locking specific devices in the account's device list. (According to information from some similar threads in the past, this option is usually irreversible.)
Find and lock a lost Windows device - Microsoft Support

Anyway, refining the description of support articles or expanding the functionality of certain options is always a direction to optimize the product experience.
We noticed you mentioned the Feedback application.
Would you mind sharing the original link to the feedback with us?
This will help us vote for your feedback.
Thanks for your patience and understanding.
Best Regards,
Kyo.Y - MSFT | Microsoft Community Technical Support