The suggestion was not to use  that API but to just understand the flow of the calls.
When you load the Model is already compiled so you cannot impact the model with the new globs (only if you run eagerly as I mentioned in the last post):

  
      

      TensorFlow
  

  
    

tf.keras.models.load_model  |  TensorFlow Core v2.6.0 2

  Loads a model saved via model.save().