They were talking past each other most of the debate but were able to find some commonground by the end (drivechains and lightning work together). No one uses lightning but enthusiasts is partially true, but that's mostly true due to the reality of most people just wanting to buy and hold bitcoin as a store of value, IMO. Lightning has definitely been a positive development, but there is indeed still plenty of work to be done. As a side note, stablecoins have also been an improvement to the traditional system that have taken medium of exchange use cases that people thought were going to be use cases for bitcoin.