But all you said were copy and pasting all your theories and arguments of what you think. Those cannot be proven until it is done in practice. How is that debunking the question if Segwit is really necessary?

The point of the question is if it is necessary now with the current usage of LTC. It will be an improvement I am sure. But is it necessary from the point of view of a user?

You first have to ask yourself, how is it being used now? Why do we need Segwit now to open the roads to a Lightning Network?