Bitcoin's issues will not be solved with "Layer 2." The gold standard was destroyed by its own "Layer 2" solution to its flaws as a currency: paper currency replaced gold and in the same way, a cryptocurrency like Bitcoin that has extreme transaction fees and requires bloated centralized solutions on top of it will gradually be replaced by those "solutions."

A decentralized digital currency and a store of value has to work as such without aid from other systems.

This is a clip from an interview I did for Monero Talk. See links to the full interview here:
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