I am also frustrated that they don't have a larger following either. I am asked constantly if what I shoot is a CZ. And when I try to educate about my X-Calibur, I get all sorts of reactions, from "never heard" to "I've read a few good things about them" but rarely do people want to try them or even dry fire them at the safety area.
My guess for the lack of following (without being too political):
Saturated market for polymer 9mm pistols in general
Still very new on the market
The CZ75, Tanfo, XD and Glock rule the class already
A catch 22 of a lack of followers meaning less followers are likely to be made
Very few aftermarket parts besides DAA (race holsters), RHT (kydex holsters), Henning (base pads), Springer Precision (base pads and grip tape)... Yeah, that's about it.
It's also had a chaotic history in the US, but I said I don't want to be too political.