The sum of it is that the thorns may have not "broken" his skull, but rather dug deep enough to scrape the bone.
You got me on why they went so detailed, but it was probably to emphasize that it was so embedded into his skull that no one could take it off without ripping flesh. The goal with that point would be to illustrate that he died on the cross with the crown intact.
I need a little more on the thorns punctured the skull please. No bones were broken and the material of the skull is bone.
https://www.catholic.com/qa/did-crown-of-thorns-break-jesus-skull
Forgive me, punctured isn't the greatest term.
This is a semantic thing.
The sum of it is that the thorns may have not "broken" his skull, but rather dug deep enough to scrape the bone.
You got me on why they went so detailed, but it was probably to emphasize that it was so embedded into his skull that no one could take it off without ripping flesh. The goal with that point would be to illustrate that he died on the cross with the crown intact.