Beyoncé’s father, Mathew Knowles, is standing up for her youngest, Rumi and Sir, after Kanye West’s offensive remarks about them on X. In his since-deleted post on Tuesday, March 18, West, 47, wrote, “WAIT HAS ANYONE EVER SEEN JAY Z AND BEYONCES YOUNGER KIDS,” before questioning the 7½-year-olds twins’ mental capacity using offensive language. Beyoncé, 43, and husband Jay-Z, 55, …