Bitcoin on chain: collateral, long term storage (hodl), backing
Lightning: plumbing and pipes, interconnectivity, payment protocol
Cashu, fedi, liquid, lightning, ...: peer to peer electronic cash.

Oh, but the whitepaper said Bitcoin is peer to peer electronic cash
Oh, but you said lightning is going to be used by the end users, not as interconnectivity layer.

Yes, software, technology, narratives evolve. And it's better than if the whitepaper was right and frozen in time.