The lightning network isn't a saviour some people thought it would be. It doesn't really solve the issues that Bitcoin has (the price and time it takes for transaction fees to get confirmed, and how both increase when the network gets congested). It's not the thing that makes Bitcoin a viable replacement of fiat for daily purchases because it's harder to use and doesn't always lead to very low fees, from what I've heard. So it's not the solution, but it's a solution, in a way. It's certainly not a failure. I think it's okay to wait and see if it gets better later on.
But if LN doesn't handle a mainstream transaction load such that it could be used for everyday transactions, then... what purpose does it serve? Why not just use normal Bitcoin transactions?
By the way, I continue to be a little bit dumfounded that in a community of thousands of deep thinking technical people the central tradeoff of centralization, safety, latency and cost hasn't been quantified. For me, as a 30 year veteran of high-scale architectures, it took me about
five minutes to understand that Bitcoin, or anything based on blockchain, would
never scale to mainstream loads. And hence my viewpoint is that insofar as a project gets closer to doing so, it gets further from being actual blockchain in the way that it was meant to be used.
As a technical architect I usually try to make my point with theory, but in this case the empirical evidence is inescapable: they've been working on the problem for over
13 years and it's only become worse, not better (which, if you understand the theory, is exactly what you'd expect).
The Bitcoin project and all of the sundry blockchain-based projects would be better served to stop wasting time trying to make blockchain something it is not, something it was never meant to be, and something that it cannot ever be no matter how hard they try.
Or to put it yet another way:
Bitcoin already has a "lightning network": it's called the ETF and/or central brokerages that store a
representation of people's holdings in an ordinary centralized database.
Most consumers today see a purchase of Bitcoin as something that only takes a few seconds and only costs a few dollars. That's because they aren't actually transacting in Bitcoin. And guess what: most consumers
don't care about "decentralization" and they don't even know what that means.
Lightning Network, to me, seems like a project that was generated by denying these core truths.