Ok.
#1 - that's a letter from a single Herald reader. Not an editorial, not a researched article, just a single letter that has been selected from (all) those received at a time when most people have had time off work, and likely to be spending less time writing letters to papers.
#2 - I'm a short wearer in all but the coldest conditions. i dont' feel the cold in my legs, when commuter cyclign in teh leak district then -4 deg c was the switch to longs as my knees did ache below that.
#3 - when running/hiking in the cold and wet then I find trousers just hold the cold and wet, take ages to dry. The postie in the picture is an example of a someone who is out for a full day, moving and so creating heat in the legs from walking, and so there is a practical nature. Indeed in scotland the Kilt came about exactly because of this, with the lower leg walking through the bracken and the kilt keeping the wearer warm above the knee.
#4 - If people are distracted and looking at my legs/ankles then they aren't looking at my face, so I'm comfortable with that.
There is a real issue of teenage/young 20s girls in Edinburgh/Glasgow/Newcastle especially getting hypothermia due to cold weather and the symptoms being confused with them being drunk. So I do get the concern.