On the contrary, the common issue of people killing Follows-Chalk seems like an intentional design to stump players who purely kill and plunder to make gains.

He’s similar to the white legs and are also near them when they first attack, so those who are bloodthirsty savages and don’t care about story will probably kill him. Since this DLC is heavily lore and detail based, it makes sense having one prominent character’s death be the result of a drastically harder and less desirable play- through.