I've used trangias from 2 degrees north to 74 degrees north, in everything from 44 degrees centigrade to -42 degrees centigrade (not so good in the last temps), from no wind to real gale. Never had a problem. You trangia-negative guys must suck at cooking or handling stoves.
It might not be the 'optimal' stove in all conditions, it may not be very efficient in really cold weather, but if you know how to handle it, it will always deliver (in the end). Meth doesn't stink, it's the additives, get proper alcohol and there will not be any problems with odours either.
And talking of optimal stoves, if I want to have the optimal, comfortable stuff, what the heck am I doing on this board? Get on a RV forum or something. Most people here would probably prefer a fire to a stove anyday (or I at least I hope so), and resort to using a stove when a fire isn't allowed or possible. That's my mindset at least. I see this bushcraft thing as a craft you do out there in the bush, not optimising kit. If you're worried that you cant fit cooking into a tight schedeule, you're doing it wrong...