Lightning Network is BTC, just off-chain. You are correct however that the technology itself can in principle also be applied to other crypto assets. This is partly done already through the taproot as...
A token is not the real thing, just like USDT is not USD.
LN is a token technology available to any other crypto so that point of "fast transactions" is moot when any other crypto can literally enjoy the same tech.
Albeit we never see LN being used in the real world for anything other than zaps or the ocasional coffee because for anything bigger it will break often or not find a channel. That is really the reason why monero doesn't care about acrobatics and just uses monero itself without loops nor jumps.
LN is a token technology available to any other crypto so that point of "fast transactions" is moot when any other crypto can literally enjoy the same tech.
Albeit we never see LN being used in the real world for anything other than zaps or the ocasional coffee because for anything bigger it will break often or not find a channel. That is really the reason why monero doesn't care about acrobatics and just uses monero itself without loops nor jumps.
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