Can you explain how these solve the problem? To use a mint and create e-cash, you have to use lightning, so you still need to have an open channel and liquidity. You aren't increasing the number of sats available. What am I missing? 

joda

bitcoin

Mass adoption with LN limitation

JulienPH

Federated solutions will become popular for this reason in addition to privacy, improved security (for some), and other features.  Examples include cashu https://cashu.space/ and Fedimint https://fedimint.org/.