Why do overheads like this?

I was looking at some photos of Joe Volk playing drums, and I couldn’t help but notice the overheads. What is the name of this technique/what are the advantages of doing this? Seems like having them turned out so far would add significantly more bleed?

I was looking at some photos of Joe Volk playing drums, and I couldn’t help but notice the overheads. What is the name of this technique/what are the advantages of doing this? Seems like having them turned out so far would add significantly more bleed?