transformListener constructor parameters in tf2 and related questions

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Can anyone explain what node and spin _ thread parameters exactly mean in the C++ constructor of TransformListener ?

My problem is that when I create TransformListener inside the init() function of my Node with a custom QoS like this

    tf_listener_ = std::make_shared<tf2_ros::TransformListener>(
        * tf_buffer_ // buffer
        , this       // node
        , true       // spin_thread
        , qos  
    );

I get an exception

terminate called after throwing an instance of 'std::runtime_error'
  what():  Node has already been added to an executor.

I guess that ROS tries to run a different copy of my node in a separate thread, which causes this exception.

But then why on earth the basic constructor

 tf_listener_ = std::make_shared<tf2_ros::TransformListener>(
        * tf_buffer_ 
 )

works correctly ? Doesn't it substitute this for node ?

This also works

    tf_listener_ = std::make_shared<tf2_ros::TransformListener>(
        * tf_buffer_ // buffer
        , this       // node
        , false       // spin_thread
        , qos  
    );

but I can't get from the documentation if this code is functional or not.

Also, what is the difference between qos and static_qos ?

Can you use static _ qos if the transformation does not depend on time ?

Will redefining the move-constructor for my Node to change its name when it is copied solve my problem ?