WHY DID ELON MUSK RENAME TWITTER X...?

Musk suggested that he’d chosen “X” to replace Twitter because he wanted something that “embod [ies] the imperfections in us all that make us unique”. The letter has a number of different spiritual, cultural and mathematical meanings – any, or all, of which may have informed his lifelong fascination with the letter.

Similarly, in English, x represents the unknown, as in X-rays, which baffled their discoverer, and Malcolm X, who chose the symbol to represent the forgotten name of his African ancestors. This meaning of the letter x traces back to the Arabic word for "thing," or šay