I am amazed that so many people who would like a dead animals head for a sporran find this weird.
Oh, I think the difference is night and day. Making clothing out of animals is as old as mankind itself, whether it be a full mask sporran or a lady's patent leather handbag. It is a natural thing for a hunter species, which all of us carry in our genes. It is who we are.

But adorning oneself with a part of another human being has historically been a symbol of a 'war trophy'; a sign of victory over enemies; a mark of ruthlessness. It has historically been worn by those who would rape and pillage and conquer. That also, sadly, is part of our history and is embedded in our genes. But I think that we are genetically programmed to fear or dislike those who would adorn themselves so, and for good reason.

Of course, we all know that the fellow in question isn't Attila the Hun or anything. But it would be unnatural, I think, for the average person to not be taken aback by a human hair sporran, considering what such things usually mean in human history. It's not at all like wearing a part of an animal, which is common in every culture - even the civilized ones.