It's interesting that the issue of language has been raised because that is an issue that is discussed in the essay. It questions if the use of language like "mutilation" makes it more difficult to discuss these practices in an open way.
They don't use this example and it's purely mine and obviously doesn't explain the thinking that well but imagine a conversation between a vegan and a meat eater. Does it aid the conversation if the vegan tells the meat eater that what they are doing is barbaric, cruel or completely unnecessary? Or does the use of that language tend to make the meat eater defensive, angry, less open to a discussion?
If certain practices are an embedded practice in some countries and from what I've read, the practices around what we call FMG actually cover a very wide range of practices, some very similar to circumcision, does the use of judgmental language proscribed by Western cultures, help or hinder those, like me who would like to see these practices completely cease. That's actually quite an important issue raised in the essay (not that most people seem to have read it).