I can't confirm nor deny, but this photo is from about a year ago (before the news about the diaper-clad fans hit), and based on the creator's content, I'd guess this is more of a pregnancy-related incontinence joke.

Those damn Gen Z'ers, not learning from older generations, coming up with stupid ideas. Let me tell You about "the concert methot". You let go, a few droplets at a time and rub it into Your thighs until it's dry, then repeat.