Therefore...a person may live for a very long time while his environment increases in entropy and loses all useful energy ...then the living being will have no more energy available to use to stay ordered, and being an isolated system, will eventually become disordered till death and beyond.
IMHO
That is correct. Even though individuals may live for a very long time, the sum total of entropy in the *entire* universe will continue to increase until the ‘Heat Death’ of the universe in the distant future when everything will come to a standstill. That’s based on our current understanding of science.