having to collimate a Newtonian reflector
Newtonians do require occasional maintenance. Unlike a refractor's solidly mounted lens, a reflector's mirrors can get out of alignment and hence need periodic collimation (adjustment) to ensure peak performance, particularly if the telescope is moved frequently. This isn’t a big deal once you get the hang of it. The mirrors of the average Newtonian may not require tweaking for months at a time. But for those not mechanically inclined, having to collimate a Newtonian reflector even occasionally may be frustrating.