It's easier to pierce that part since the tissue is softer compared to other places like nose, lips which are more dull. I think the most similar comparison would be the eyebrows.
And im pretty sure a penis piercing is less painful too i remember seeing the snicker meme where the girl was biting the outer foreskin part of a cock and i sent it to my friend who was a guy and he told me "believe it or not men dont feel anything on that part" im nit sure if he was telling the truth tho cause i never had the courage to bite someones foreskin, would likely try in the near future.
I wonder how those people feel when they pierce a dick or maybe guy do it themselves ?
They can have it done professionally but ik a guy who did it himself
how do u even pierce a dick