I cannot think of a practical reason why Segwit needs to be activated in LTC if the coin itself does not attract enough users to make it necessary. What if it becomes activated but nobody uses it? What good is it if it is not really that necessary?
Segwit for LTC is required to make it grow further and reach bigger and better users. Right now a strong debate is going on bitcoin after a long time growth. If the same is solved earlier success is all made easier