The common complaint is that this look is "too girly" for some ladies. Here's something I'm willing to admit- I love ribbons and bows on ladies. From as young as baby girls to as old as... well, the sky's the limit. Some cute girls look even more lovely with a bow. I haven't resented this because part of my likes in women's fashion has to do with style. This even includes innocence. It's why I've loved stuff ladies wear like ballet shoes, sashes and sash belts, ribbons in their hair, and that sort of thing.
Having said this, I'm sure some designer will find some way to make them less girly by... say, adding skulls. I'm sure someone did that already. This skate/punk trend has to go. Anyhow, I even know some ladies who do dress girly and even do girly things. One of my friends likes polka dots and is very angelic. She couldn't be any cuter in looks, so I think she would have no problem with hair bows if indeed she wanted to buy one.
This is still a very nice touch to ladies.