LN can be applied to a chain say like litecoin, but that's not the point, its about is it scaling the network in a manner that preserves decentralisation, if not what is the point of the scaling solution

TheBTCManual

My understanding was that Lightning would work for any chain that could supply five (or less) transaction and block related services, normally via an API...

I saw this somewhere once, and have never been able to find it again.  

