A woman who understands the meaning of mansplaining will not believe that it is only bad to be patronizing[1] if you are a man because the word "mansplaining" exists, any more than she would believe she is not a human being because the word "mankind" exists.
Conversely, a woman who is already of the opinion that men can't understand how sewing machines work isn't going to be shamed into adopting a new opinion because somebody coined the word "condesplaining".
[1] Of course, "patronize" is a gendered term if we go by its etymology.