Bitcoin is not an infrastructure, it is the system, remember? Projecting problems to the second layer, stacking up protocols on protocols leads to nowhere other than ruining bitcoin, turning it to something it was not meant to be.
For years, teaching noobs about bitcoin, I've been used to begin with telling them the Internet story and how its decentralized nature is hided from them by centralized services on top of it. Now what do I have tell to them? Like
This is such garbage. A second layer solution doesn't "turn bitcoin into something that it wasn't meant to be" because it doesn't do anything to the original Bitcoin. The original bitcoin will still be there, unmolested, following the initial vision. Unless you consider segwit to be too much of a departure. In which case segwit isn't lightning network or a second layer solution so you will have to take that up elsewhere.
Bitcoin is open and permissionless. People can stack what ever the hell they want on top of it. Who are you to tell people how they an and can't use the blockchain when their transactions are following all of the rules of the protocol?
"Hey, Bitcoin is decentralized, don't worry, it is the fault of second layer protocols that you are being spied and censored"?
No one can censor anyone over LN. If a particular group of node operators are censoring you than you can route your transaction through any one else on the entire planet who is willing to do it for you instead. Garbage nonsense FUD.