Inconsistent Return Type in `is_a_user_id` Function

## Description
The `is_a_user_id` function is intended to return a boolean value, as indicated by its type hint `-> bool`. However, in its current implementation, the function raises an `Exception` in case of an error, which violates the return type consistency. The function should be refactored to ensure that it always returns a boolean value, even in the event of an error.