Anti-trans activist Riley Gaines went on a seemingly random transphobic rant against actor Elliot Page on Tuesday, after a fellow anti-trans activist posted a paparazzi video of Page signing autographs in London. “Not a single person with a functioning brain and a shred of honesty looks at this woman and sees a man,” Gaines wrote on X. “I see an insecure woman who was sold a lie that cutting off her body parts would make her something she will n…