Most amateur telescopes point haphazardly.
Sometimes the object is in the field of view and sometimes it's nowhere to be found. The most popular form of telescope, the manually pushed Dobsonian with teflon and formica bearings, does not require this kind of precision construction. In addition, in a motorized scope, the motors and gear train introduce backlash and periodic errors in pointing and tracking. Consistent pointing to one arcminute is a worthy goal, giving confident centering of objects on small CCD chips and in high power eyepieces. If necessary, offsets accurate to arcseconds are easily obtained by first centering on nearby objects.