Sanitation
Someone in this office was clearly very upset with the cleaning staff, and instead of confronting them, they found a very creative, rather passive-aggressive way to let them know. It’s hard to believe this hair could’ve been there for six months without being removed, and if that is the case, then they have good reason to be displeased with the cleaning people.
However, I don’t think I could’ve worked adequately with a random, stranger’s hair hanging on the wall next to me for six months, and I would have just removed it by myself the very minute I saw it, instead of waiting for the cleaning staff for six months to do their job. At this point, this seems like a principled thing.