Yeah, same here. I had the original Magic Mouse that I wasn't using, figured I'd try. Useless, no gestures, no scrolling, not even the ability to add a "right click" context menu.
I have a feeling the original Magic Trackpad will also be useless without gestures, because the Apple support document only makes reference to the Magic Mouse 2 and Magic Trackpad 2 as supporting gestures.
It's also not great with a good bluetooth mouse, like my MX Master 2, while you can program buttons, you can't set the forward/back buttons to perform their basic functions in a browser.