Chassidim laugh at such edicts. No one tells us how to yiddishkeit our yidden.
I know of one woman, a recent widow unfortunately with lots of kids ayin hara, who cuts her head extremely short. I was startled the first time I saw her in a hat instead of her usual sheitel. It was a short as a man’s!
In my Excellence Opinion, utter nonsense. A lady should not need to cut so much. She won’t look like a woman any more. Perfectly fine to have longer hair. Just cover it with a mitpachat thing. Why such extremes?