I think the lightning protocol is the perfect solution for the scalabilty issue. Even if Bitcoin does not get to become a currency used for day-to-day transactions, its existence is justified by being a great candidate for the best store-of-value instrument the humanity has ever had in terms of portability and security.
Its ranking do speaks for itself on how bitcoin had been trust up over a decade.It isnt surprising that those no coiners or haters would definitely be targeting about scability issues
that we've been seeing through ages and this one isnt really that surprising.
They could say and talk all they want yet bitcoin was never intended to replace fiat or something like that but rather focusing on that p2p decentralized payment system
which its creator do really talk about.
Expect that there would really be always those criticisms and negative input and its not something very new and already been anticipated.