I think it was a piss take. Daley didn't start the rumours they were rife. Carl Lewis was an extraordinarily accomplished athlete.
Carl Lewis was treated much worse by prospective sponsors. He turned down a deal because he reasonably thought he could get a better one after he'd won a shit ton more gold medals. The deals did not materialise because of the perception he was gay. There is still speculation about it. He was caught up in a doping scandle in the late 80s. He claimed it was a Chinese herb he hadn't realised contained banned substances and was given a pass.
Fwiw, I'm not a sports fan and I'd completely forgotten about it and him. In the unlikely event Carl Lewis reads this I'd like to say he's a great athlete, owed a massive apology by a bunch of corporations and news outlets and, perhaps, a glass of nice wine from Daley Thompson.