Article by Pink News: In a Twitter conversation, site owner Elon Musk attempts to reframe "cis" as a slur, deliberately making the site even more overtly hostile to trans and LGBT+ folks
Reminds me of when unlikely hub of transphobia Mumsnet which has partially driven the huge amount of transphobia both in the government and society (JK Rowling) said "we're not transphobic, actually" then in the same post said the word "cis" was banned.