Dana Defosse, who coined the word 'cisgender', said Elon Musk has "history of attacking trans people" after he claimed "cis" or "cisgender" are considered slurs on Twitter. "Banning...a word that's part of our daily vocabulary...is a cowardly...attempt to censor an idea," the researcher added. She asked how will people have rational discussions on gender identity if the word is banned.