The Core contributors are working on several improvements to the infrastructure that should enable the network to increase the block size. However, only off chain solutions such as LN solve this problem.
Which makes it effectively no improvement on the bitcoin network anymore. It would be a solution besides the bitcoin network, using bitcoin transactions in some way. A crutch to make bitcoin work while it is held crippled intentionally.
Well i guess you now will claim again that it's all bitcoin.
I won't answer if you do.