Once upon a time almost all energy drinks were made out of the cheapest ingredients possible. As with all tech, food tech has also improved over the years and new and more exciting recipies are possible today! Core Germany was founded by energy drink enthusiasts who wouldn't accept cheaply produced energy drinks anymore which tastes like the stuff in which fish swims.
If you want to stick with the old stuff, you're welcome. If you want to try the improved stuff, you came to the right place!