1. Bitcoin can buy coffee but that's never the function of a base layer serving 8 billion people.
When you buy a coffee with a credit card you are using a L2-L3 payment without final settlement. If Monero served 8 bn people then its base layer could not be used for buying a coffee. Since almost nobody uses Monero, you can absolutely buy a coffee on its base layer. If a form money becomes widely used then it won't make economic sense to buy a coffee on its base layer.
2. Scaling Bitcoin to meet the needs of 8 billion people will primarily happen on L2-L3 since the base layer must be secure, decentralized and allow noderunners to run local nodes. Ignoring this fact is an appeal to magical thinking. We can't achieve bandwidth for 8 bn people on a secure base layer.
3. Bitcoin is rules without rulers. If you want decentralization, property rights and liberty for all, Bitcoin game theory can achieve that while Monero doesn't have that sort of impact on politics.
Monero might be useful as dark money at some point but it is not a store of value that can enact a positive pressure on nations/jurisdictions to increase individual liberties. The game theory of Bitcoin will pressure nations to either lose capital in capital flight, or, improve individual liberties in order to keep capital (Bitcoin). Liberty arbitrage requires a global store of value.
I wrote a piece on the game theory of why taint will not work against Bitcoin and it also lays out how liberty arbitrage works. This is dependent on Bitcoin being a global store of value.
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