Me, not shaved and trying to pull off a silk scarf as a tie. Think it worked?
As for questions about the reason: shirts that fit my chest and shoulders well are usually quite (if not too) tight on my neck. Because of that I often find normal ties to be too rigid, their knots usually pressing on my Adam’s apple or just below it. It makes me uncomfortable to a point that after some time I have to rip the tie off to avoid retching. Silk scarves are different in being much softer and more flexible. Unfortunately that also makes them hard to tie into a half decent knot….
Btw. I’m wearing this sweater.