Being scared of an adjustable stem is like being scared the wheels fall off or the seat post sliding into the frame for no reason, or whatever. Im sure lots of garbage is available, but there is nothing inherently wrong with the concept, outside of possible bad engineering and manufacturing. Obviously a one piece stem is lighter and stiffer and cheaper, but its only better if it fits.
Reminds me that no one seem to care, or even praise, most wheels come with all sorts of adapters to make them fit several types of frames. Imo the same principle apply. Simple is better. A hub that is designed to fit one system, is likely to have fewer parts and have the rotor, flanges and free wheel in the most optimal place.
Last edited by Racing Dan; 03-28-20 at 12:56 AM.