That small wheels get snagged on rough roads is a complete myth. Guiseppe rides on cobblestones with the even smaller (and harder) wheels of his mini125 as I have with the slightly larger wheels of my Carryme.
Disadvantages of the A-bike over other ultra small wheelers are that
1. the frame is cheap and weak (lots of people report having cracked frames)
2. The midrive is inefficient
3. the riding geometry is poor
It's exactly what you'd expect from a cheap 12 pound bike. The small wheels have nothing to do with it.