you are moving the goalpost in the discussion of this thread. User KaierPro said bitcoin would not be suitable because transactions takes to long, to which is responded lightning solves that. Now claiming that other cryptos can have layers-2 is correct, but adds nothing to the discussion or my initial point. Yes other chains have faster settlement times, and can have their respective payment channels - no one argued against that.
Theoretically.
In practice, it has shown that it is only viable if adoption by number of nodes and TVL grew by orders of magnitude, and both are very unlikely to happen because - like I said - spenders have nothing to gain from it and no matter how much of the UX friction is solved, it will never be as easy as paying with credit card.
The only people who want to use Lightning are the ones who are invested in Bitcoin. Everyone else just want a simple/safe access to a payment network.