hot water

Q: I read in an online fatwa that "In Faatawa Shaamiyah, it is stated that when bathing the mayyit, water should not be too hot as the mayyit also feels pain and is harmed just as the living."

Since this indicates that the mayyit is sensitive for temperatures, does it mean that he may also be harmed when his body is placed in the Mortuary Fridges, where the temperature is cold? Does his feeling end after burial, or will he also feel the cold earth, the insects physically biting him etc?

Q: In many places, the chicken is slaughtered and then tipped in to the hot water and then the feathers are removed. In all the chicken shops this is the method. Is it permissible to eat this before taking impure parts? Secondly, feather removed by hand instead of using hot water and then roasted to removed small leftover feathers before taking out impure parts, is it permissible?