I googled for a photo demonstration of Uguisudani’s deceptively casual half-up hair bow hairstyle on page 24. It’s not a bow in her hair, it’s a bow MADE from her hair.
And the hairstyle will look silly on someone if they make the hair bow too large or too small, or too messy or too neat, or awkwardly placed on their head, or their hair is too short to pull it off. Plus a hair-down style combine all the fussiness required of an updo with all the sweaty-neck disadvantages of leaving your hair down.
“Hair style only TV idols and cute girls can pull off” indeed.