Your inexperience is showing.
I routinely shoot handheld at slow shutters. Before calling BS, maybe you should try to teach yourself how to use a camera handheld at slow shutters. You must be mindful of your breathing. Use a shutter release cable. Hold the camera taut against the neck strap, if possible. Exhale. Then push the cable button.
I'm attaching a photo I made of my wife Melanie in Sainte-Chapelle in Paris, using a 1930s Voigtlander Superb TLR -- a one-second exposure wide open at f/3.5. The focus at the focal plane is a touch soft because it's an uncoated Heliar lens in difficult light, shot wide open. And in part because it's a one-second exposure of a living human being. But I can shoot long exposures like this any time. Shelve your presumptions, and you can too.
You could never do this with a Hasselblad. (Or at least I can't.)
PS -- Thanks to David Goldfarb for selling me the Superb ages ago. What a camera!