I suspect mtgx is referring to the fact that the Facebook app doesn't follow Google's Holo design guidelines. They have instead opted to make the iOS and Android apps mirror each other as closely as possible.

Oh, UI design. I thought he meant engineering design.

I'm not particularly fond of Holo, so I'm ok with this.

I like holo, but people definitely go way too overboard in demanding that all apps use it. wanting android apps that exist only as android apps to be holo-style is fine, but something like facebook that has their own identity above and beyond the android app should style their apps to fit in with their own identity first, and making them fit the platform should be a secondary concern. I think that facebook has done a good job of balancing the two.

They could at least add a menu button somewhere that makes sense instead of sending it to the soft button panel.