Chinese miners are also smart enough to know that the Devs are trying to steal Control of their coin away from them using Segwit & LN.
Agreeing to segwit , means the miners will be losing transaction fees to LN, they would have to be stupid to agree to it.
The amount of money miners make from transactions is low.It certainly doesn't cost five or ten dollars like it does on Bitcoin. So smart miners know that if the price of LTC triples (or better) with segwit activation or even higher with the LN that profits will be much better.
This idea that LTC miners are concerned about losing transaction fees is false. The idea is imported from the situation in Bitcoin and carries no weight with LTC miners.
I see this falsehood, being preached in BTC and now LTC,
Activate segwit and the price will rise.
There are no guarantees , if so , many would want it in Writing.
LN will act as a competing service with any PoW coin miner , dumb enough to activate it.
Even thru at the moment, the miners make more off of the Block rewards.
It will not be that way forever, as the Reward Halving is every 4 years, and those transaction fees become a greater % of their payment every halving.
One Day Block Rewards will be ZERO , and then the Miners need every fee they can get to maintain a PoW network.
Your point seems to be that as a competing service that the LN will destroy the settlement layer. That would be a little dumb of the LN to bankrupt the miners that support the layer that allows the LN to exist. I doubt the LN providers would actually want to end their business by allowing the layer it's based off of to become insolvent.
If the LN exists thousands of transactions per second becomes possible. Not just the 2.5 per second that BTC is capable of or 10 that LTC is capable of. That means large scale adoption could actually happen. If adoption happens there will be more than enough income for both miners and LN service providers because cryptocurrency would be worth trillions not billions.
If adoption does not happen the LN businesses will likely collapse. Cryptocurrency will be a niche business and mining will continue in it's current form.
It seems that miners have nothing to fear from advancing technologies. If they choose to not support them eventually a cryptocurrency capable of thousands of transactions might leave them behind.