Ugh, I didn't know about the others you just mentioned. I get it, long hair can be very hard to deal with, and it's super conspicuous, so it tends to draw attention that's not always welcome, and snide comments by the envious can build up over time and wear a woman down.
Regarding Dashik - I remember her saying that, but I think she's way too proud of her long hair to cut it off. It's what made her internet famous, and I haven't heard her talk of cutting it in some time. But then again, Orysya never mentioned cutting her hair, so anything's possible.
A few others recently: Haartraum, a german woman with incredible thick dark blonde hair just shy of her knees, promised she'd be growing it longer in 2019, only to appear with what looked like thinning layers and a much lanker, weaker look compared to her previously thick hale hair.
Then there's Holistichabits, who had just incredible thick, soft hair to her mid thigh before cutting it back almost a foot, and getting bangs to boot. Still long, but the magic of it is now gone.