...generalized criticisms.... are rarely productive (for anyone involved) or sensible, and are usually best kept to oneself.What do you mean by this? Gain size quicker than one that's experiencing the fluctuations of ambient temperature?
I've admit I've never been impressed by any chicks I've seen artificially brooded but they are more than adequate for many folk's needs, many folks aren't as fussy as me, and I don't have to grapple with a snowy landscape, thankfully! I forget that some people may feel offended by my often too generalized criticisms of some methods. I don't mean to be derogatory about what anyone prefers, just sometimes I almost forget that others have different standards and objectives.
Each to their own. Chickens are livestock more than pets for most and when you're trying to grow your own food in a frozen place, whatever works!
I recall one Friesian cow I saw in an old picture, a barn raised one who spent at least half her life in some barn in some frozen mountain in Sweden I think it was.... She looked like a spotted pig. Not a cow. Never seen anything like it. But she was happy, and brushed till she shone, and very, very clean, and plump enough, and seeing that pic I understood why our own massive Friesian cow, not hand raised, would nonetheless always lie on the ground on her side to lay her enormous head in our laps if we sat down. Because that's what the cow in the pic was doing with the little children whose job it was to tend her. I'd bet the most tame chooks we have probably come from countries where freeranging throughout all seasons is simply not an option.
Have fun with your experiments, and it will be interesting to see what unexpected things result. Best wishes.