If you ask me, it is likely the first metric ever that distinguishes Bitcoin from other currencies
LN is not a bitcoin only network feature
LN is a separate network that multiple coins can and do use.
the proof that its a different network is to simply ask you what does N stand for in LN
LN will still function even if no bitcoiner uses it because litecoin, vertcoin and other coins will use it.
sorry to burst your overpromised over advertised fluffy cloud. but LN was only hyping up the "bitcoin" buzzword
to hype up some investment from VC's
just like Circle(a fiat company)
just like Coinbase(a fiat company)
where they too play around with multiple coins/currencies. but kept on shouting out "bitcoin" to get funding
again sorry to tell you this but lightning will not give bitcoin any unique functionality
research it. hint: chainhash
here ill even show you a few lines of code that LN is not a bitcoin feature but a separate network for different coins
https://github.com/lightningnetwork/lnd/blob/master/chainregistry.go#L580 litecoinMainnetGenesis = chainhash.Hash([chainhash.HashSize]byte{
0xe2, 0xbf, 0x04, 0x7e, 0x7e, 0x5a, 0x19, 0x1a,
0xa4, 0xef, 0x34, 0xd3, 0x14, 0x97, 0x9d, 0xc9,
0x98, 0x6e, 0x0f, 0x19, 0x25, 0x1e, 0xda, 0xba,
0x59, 0x40, 0xfd, 0x1f, 0xe3, 0x65, 0xa7, 0x12,
})
// chainMap is a simple index that maps a chain's genesis hash to the
// chainCode enum for that chain.
chainMap = map[chainhash.Hash]chainCode{
bitcoinMainnetGenesis: bitcoinChain,
litecoinMainnetGenesis: litecoinChain,
}
^note LITECOIN is coded into it by default, just for starters