: Over time, the filename itself became a meme within the anime community. Sharing the specific filename "sao_ts_08.mp4" was a way to signal that you were watching the "definitive" visual version of that fight.
: It captures the climax of the battle against the Gleam Eyes on the 74th floor, where Kirito reveals his "Dual Blades" skill for the first time. sao_ts_08.mp4
Essentially, if you see someone calling it a "solid review," they are likely paying homage to the legendary technical quality of that specific raw transport stream (TS) rip. : Over time, the filename itself became a