River estimated that lightning had about half the transaction volume as the base chain in 2023. That’s not a small percent and it’s been growing. https://river.com/learn/files/river-lightning-report-2023.pdf

Transaction volume is a piece of this story, but not the driving factor. Whirlpool was attacked with less than 8k Bitcoin mixed. We need more nodes. We need more coin pegged in lightning channels. It needs to become the standard. If mixing was a default standard on chain across most wallets SW would not have been attacked. Privacy must stop being a feature that only exists on the fringe.