Camber adjustment/rack and pinion

True, plenty of "mechanics" with lots of experience doing things wrong . They also tend to specialize just like people Drs. Brake guys tend to not do much electrical or tune up diagnostics, but they do brake services. Your mechanic may not be a front end guy. A complete inspection of the front suspension including the tires is a normal part of an alignment service. You don't align worn, loose or damaged parts.