I definitely accounted for the lack of turn coordination without rudder in my statement. You’re right in that sailplanes will be affected by adverse yaw more than most planes. And if you have to hold aileron to make up for stability, adverse yaw will continue. However, in most instances, most aircraft you don’t have to use rudder in order to maintain a smooth turn (just to roll into it, which is largely depends on roll rate in many aircraft). I should have qualified. My statement was in response to this:
(Emphasis mine)