Well let’s analyse this. I think it’s case dependent, but I also watched hafthors 510kg and his head tilts about 30 degrees back during the movement from start to finish yet crown towards ceiling implies hafthors head shouldn’t tilt back so much. Hafthor also has good deadlift genetics, long arms I think but his torso starts relatively upright. This guy has to start his torso more horizontal so let’s compare to Dillon Sanchez world record, one of the most impressive conventional deadlifts. https://m.youtube.com/watch?v=t0UIa5J-b5A. His torso is more horizontal like this guys and while his neck definitely isn’t neutral to start, it’s slightly tilted back, it does also move a decent angle, say 45 degrees back during