The idea of Bitcoin is to take away control from central banks. The central immutable ledger is key to this, but no central ledger can scale to the amount of global transactions to satisfy the whole world without significant undesirable trade offs.

Some Bitcoiners think that self custody on layer one is the only way, but this is an eletist view. It can't scale. How are you then any better than the existing system if you do not want to promote, use and support layers, payment network, sidechains etc. on bitcoin and rather promote some abstraction unit for spending? How does your model fix anything for the majority of people? We must build and support Bitcoin native technology that can replace the existing systems or we will not decentralise the systems for the average consumer. Decentralization and self custody are not the same and L1 cannot be touched by the majority of people on the planet. Decentralization and transparency built into the systems built on top of Bitcoin is the best model I can come up with.