There´s also lots and lots of cisguys with long hair...which doesn´t neccesarily makes them look ´feminine´.
And you´re right...I once grew my hair long, just under my shoulderblades and it just didn´t suit my facial structure.
Let alone the hassle of grooming etc. It´s very thick, unruly, wavy etc.
I have a cute pixie since then and it suits my facial structure perfectly. I have a flat forehead, natural high cheekbones, a natural ski sloped nose, a natural tapering jaw and a natural small chin....which all seem to fade away when wearing long hair which makes my full face also seems gaunt looking or narrower looking.
Also, long hair CAN emphasise masculine features.
That´s the exact reason why ciswomen have their hair cut short(er) after approx 35..because ciswomen´s faces also masculinisise when growing older.