Lightning is a UX disaster that is not easily solvable as the headaches are part of the protocol itself (opening/closing channels with nodes etc.). I've used some of the various apps that have been released and I find it very difficult to see how "normal" people are going to understand and use it at all. Instead of trying to innovate with new blockchain designs, there is a significant amount of minds trying to hack together bandaids for Bitcoin, a protocol and blockchain that has already been crippled by Blockstream and the scaling debacle.
If one steps back and takes stock of the ecosystem, I find it very difficult to see what value proposition BTC has other than reputation and being a first mover. Store-of-value is something that Monero can do better as it guarantees privacy which I'm sure a lot of people would like. Instant transactions is something that NANO has solved on the protocol/blockchain layer (and without using clunky hacks like Lightning) whereby transactions are settled almost instantly and at zero cost.
Quite frankly, the only thing BTC has going for it is brand value - technically it has already been superseded by other protocols, but BTC maximalists (such as the author of the article) are ignoring this reality likely due to sunk-cost fallacy.
So no, I disagree strongly with the author. There is a lot that can be built within the cryptosphere, and I think trying to gatekeep innovation by limiting it to the BTC protocol is extremely disingenuous.