Complete vaporware? Uhm, no... https://www.coindesk.com/lightning-last-test-shows-bitcoin-scaling-solution-almost-ready/ https://www.coindesk.com/lightning-last

Complete vaporware? Uhm, no... https://www.coindesk.com/lightning-last-test-shows-bitcoin-scaling-solution-almost-ready/ https://www.coindesk.com/lightning-last-test-shows-bitcoin-s... There have even been successful atomic Bitcoin<->Litecoin cross-chain transactions with Lightning last month.