ASICs have their own weaknesses. CPUs have their own weaknesses.
Your Coinbase example is exactly why Monero is fungible and Bitcoin isn't. You to allow it all, or allow none of it. In either case it is fungible with any other Monero coin. While Bitcoin is split into tainted and clean coins.
Your argument about teh conequences of writing to the chain forever applies tenfold to Bitcoin. It is completely exposed. *Right now*, not in some hypothetical future™, Monero completely hides amounts with ZK proofs and uses stealth addresses to hide receivers on chain. If quantum computers become a thing, that vulnerability is not unique to Monero.
You can actively monitor and probe most Lightning Network activity and save all that data to be used later to be quantum cracked as well. Not very different. While what you're saying about staying private on LN is true in theory, most LN users don't transact that way (ignorance? UX hurdles?). They are not concerned with privacy (Phoenix wallet). Additionally even more aren't concerned with self-custody (~90% WoS, Chivo, Bitcoin Beach). Lightning has better default privacy than on chain, but *right now* it is not better than Monero.
We can use DNMs adoption as a simple metric. No one uses Lightning. Monero will soon dethrone Bitcoin on there where privacy is priority #1 and everything is at stake


