My 19 month old Ds is always hot, to the point where he can be boiling to the touch, red and sweaty when others are shivering. I am putting him in a coat at the mo, but he still gets sticky and sweaty, even when it's so cold we can see our breath. Our bloody neighbour loves to rush out telling us he's going to die of hypothermia because we let him - wait for it - walk from the front door to the car without a coat (he doesn't wear one in the car, because he really does overheat and besides, we can heat it up or put a little blanket on him in the rare event he is chilly. The irony is, she's one of those 'thin top and ballet shoes in the snow' freaks herself!
OP, the mother might have just been going from a warmcar to a warm shop, or vice versa.
Whatnow, FFS, you have left me speechless! You actually think carrying your child is a new trend? I guess humans never left their caves until the wheel was invented and someone could also invent a pushchair?! Okay, I know you mean new as opposed to using a pram or buggy to transport them everywhere, but it's still very silly. It's much nicer for the adult and child to carry the tot. I am the opposite - I feel sorry for children who are never carried but just carted about everywhere in a buggy. Where's the connection, the interaction, the closeness? Know you can't have that all the time, but...meh, I'm a babywearing old hippy, me! Oh, and kids can have accidents in buggies too; falling out due to incorrect strap usage or plain old escapology, being jerked and hurt if the wheel hits a stone, a parent could let go by mistake on a slope, buggy toppling over cos it's been overloaded and there are quite a few accidents where parents or carers have stood at the road edge waiting to cross and unconsciously placed the front of their pram or buggy sticking out into the road,etc., etc.