What is the practical consideration and impact on user experience when the designer makes the logout link/button difficult to access?

It seems like many websites go to great lengths to make the logout link/button very difficult to find or click on. For returning users hiding the logout link/button doesn't make sense because they already know where it is, so unless it keeps getting moved around I don't see the value it making it difficult to access.

For new users, it would be frustrating not to be able to locate the logout link/button, especially if the application is looking to create a good user experience and trust with the users.

Is there an actual practical consideration for doing this from an user experience point of view? What is the functional or business purpose for implementing this style of design for the logout interaction?