Why doesn’t it support menus?
Unofficial, third party media players that support blu-ray almost never can do menus. As is, I guess it’s hard enough to get them to work with AACS on encrypted discs, so it’s a bit of a hack job. And they need to keep up with changing keys, etc.
Hang on, are you saying that MPC HC can play BDs without a third party software to get rid of the encryption first?
Nope. Just talking about the functionality itself. The AACS comment was just in regards to why media player developers might not spend much bother on blu-ray support. The amount of unencrypted homebrew discs out there is negligible, and even pirates would probably stick to other formats.
There’s a way to rig VLC to use the encryption key, though. I think.