How to Use operators: has an account/doesn't have an account

I just came across these operators Operators and comparisons | Bubble Docs and a bit lost on how to use it


Especially confused since to me, logically, if the user is found, and is not the current user, then it would always return the user and therefore is obviously, a yes, for has an account, which can easily be understood by saying the ‘user is not empty’…also, if doesn’t have an account, then the user is not found, so clearly doesn’t have an account and the ‘user is empty’ can suffice.

Am I missing some use case for these operators that can not be achieved by just using ‘user is empty or user is not empty’?

I have never used it but I thought it relates to this:

On this page: