I think that's what he's talking about. Since Dolphin is not the bottleneck when it comes to pushing out frames, the question shifts to how fast a monitor can put them on screen. My understanding is that a CRT basically draws the frame in realtime since the cathode ray starts from the top scanline at (roughly) time t=0ms and finishes at the bottom scanline at t=16.67ms. Meanwhile an LCD with 1ms display lag would receive the frame information across that same time interval, but not actually display that frame until t=16.67+1ms.
I don't think that a 144hz refresh rate would make that faster though. Display lag can be thought of as a question of how fast frames are added at the beginning of a buffer or queue and not how fast they are unloaded at the end of said queue. Except that in the case of displaying frames on a TV the unload only happens as fast as something is loaded in its place, so for a 60FPS game a higher monitor refresh rate doesn't have any extra effect.
I don't think that a 144hz refresh rate would make that faster though. Display lag can be thought of as a question of how fast frames are added at the beginning of a buffer or queue and not how fast they are unloaded at the end of said queue. Except that in the case of displaying frames on a TV the unload only happens as fast as something is loaded in its place, so for a 60FPS game a higher monitor refresh rate doesn't have any extra effect.