I wonder is stipulating that it be a woman wearing the shirt brings us closer to 52. If a woman went out in public wearing a t-shirt, she’d be breaking the law in quite a few more places. Or maybe it’s all the same places as the original list?
How about (hypothetical) jurisdictions where it’s illegal to display a statement that’s verifiably untrue? If you had 4 countries where the cross was illegal, another 48 where the untrue statement was illegal, that would bring us up to 52.
But wait - then it would be true, and it would be hunky-dory in the 48 truthy countries. But then it would be untrue again…