I far prefer unedited, minimally edited, or natural-sounding edited stuff; I want to hear a human. 100% on grid sounds like dick to me, and even 90-95% can be too much.
What you see on the vid is what he actually recorded, no play-along or cheats like that
Yes there's editing, but as you can see the performance is still appreciable and tight enough by itself. We're doing edits just to have that bit more of consistency that doesn't hurt. Sorry for not crediting you Jeff, next time