That,s correct, I rarely use noise reduction since I dont think I need it for the photos I shoot. Even printed in bigger formats I never had much problems with noise so far
I add that the photo was taken with an excellent camera: Sony ILCE-7RM3 with an excellent lens: DT 24-105mm F4 SAM. The camera was set at 800 ISO, focal length 55m, 1.6 sec. f / 8. With 100% magnification. the noise is almost non-existent.🙂