Mutton has been a normal food in many times and places. It happens to be out of fashion in most of the English-speaking world right now.
I grew up around sheep and often ate mutton as a child. To me, calling young mutton “lamb” has unpleasant connotations. It would be like calling the meat of a relatively young pig “piglet”, or the meat of a relatively young chicken “chick”.
Mutton has been a normal food in many times and places. It happens to be out of fashion in most of the English-speaking world right now.
I grew up around sheep and often ate mutton as a child. To me, calling young mutton “lamb” has unpleasant connotations. It would be like calling the meat of a relatively young pig “piglet”, or the meat of a relatively young chicken “chick”.