Arnold, from what little I know of him, is a very soldier-like composer. He doesn't really come up with new material as much as stuff is mandated to him from the producers and whomever helms the production. I wouldn't be surprised if he was told, "Put some techno garbage in this scene!"
Also, I don't get how they royally fucked up The World is Not Enough. Y'know, with some good casting and better direction and tightening of the script, that movie could've been a great Bond film. The concept is great, even for the villain, and in terms of world destruction plots, it's one of the more plausible ones.