Though I'm not sure if I agree that that topic should be on the Altcoin Discussions section, I'm assuming it's because of this:
Wrapped bitcoin is technically an altcoin.
The article is devoted to LN: "The Lightning Network and ..". In the article, the author compared LN and wbtc. This is why it applies to altcoins.
You can't compare bitcoin / ln with any altcoin on this forum?