Lee expressed his concern that bitcoin's large transaction sizes to achieve acceptable privacy on a distributed financial network were just as bad as Monero's. He also discussed the need for trustless coinswaps and how such a system could be developed without scalability issues. In response, Chris shared his thoughts on the issue, stating that Monero's full nodes can't know when a TXO has been spent, so pruning is impossible in Monero and the list of TXOs perpetually grows, unlike in bitcoin where full nodes know if a UTXO has been spent and can delete it in pruning. Chris explained that he has been careful to make sure his proposed CoinSwap system doesn't break pruning or other resource-saving features, making bitcoin-with-CoinSwap's scalability much better than Monero's. He also highlighted the problems with decoys and how CoinSwap improves privacy in a similar way to Lightning by moving information off-chain. Chris suggested that even if only 5% of transactions were CoinSwaps, this would destroy the transaction graph heuristic and common-input-ownership heuristic, improving users' privacy. Chris also demonstrated how CoinSwaps could be used as payment, giving an example of Alice depositing 5 BTC into her exchange account using 1-hop CoinSwap. He emphasized that CoinSwaps are still cheaper than Equal-Output Coinjoins, which are approximately 12 times bigger than regular bitcoin transactions. Finally, he noted that blockchains don't scale, and it's widely expected that most day-to-day bitcoin transactions will happen off-chain on something like the Lightning network, which also brings us privacy.