Both the King Follet Discourse and D&C 76 say that salvation is for everyone except perdition.
And Joseph Smith says that to be saved is to be placed beyond the reach of ALL enemies, including death.
Therefore, ALL save perdition will be exalted.
Exultaion and salvation aren't the same thing. By Christ's resurrecton we are all saved from death except the Sons of Perdition.
To recieve exultation requires full repentance and a change of person to become like Heavenly Father and Jesus Christ..
Your quote of exultation isn't possible as they don't have the heart. Can you imagine Telestialites spending their eternities in the service of billions of children?