Actually, you're right, but the difference is between the powder and the whole husk. I've had both and one turns into a gelatinous mess (which I've had swell up in my throat and had to perform the Heimlich on myself), but the whole husk just floats in water. I believe "psyillium" falls into the category of both soluble and insoluble depending on the form you get, but yes, it is considered a 'soluble' fiber, but it seemed to visually demonstrate the "broom" example better. Bad example I guess 
Really? I've never had any problems with it. I mix it with V8 Splash and drink it fast, then follow with a full glass of water. It fills me up before a meal so that I eat less, and it curves my sweet tooth as well. It does have a warning on the container that if swallowed dried or without enough fluid it can choke you to death.