I think the hair isn't one of NewSea's best either, besides that it's kind of hard to make the hairstyle "fit" a simmeh. However I think there are far "worse" looking hairstyles out there, some are even "impossible", I certainly wouldn't call this hair "impossible".
I made this simmeh (WIP) in an effort to use the hair and still make the sim look "good" or "nice" or "whatever", as I like a bit of a challenge. The hair certainly looks different from the normal / standard hairstyles. Sometimes it's nice to be different