Second layer of Bitcoin is only convenient If you use a custodian (eg wallet of Satoshi for lightning). They probably Limit the use in time you really News it (eg wallet of Satoshi IS Not available in the US-playstore). Almost all LN liquidity comes from big sources.

BTC will collapse under its own weight, especially when normal plebs (funds below 5000$) want to withdraw IT from Exchanges and have to pay 100$ in fees and more.