I'm glad I made it to the part that recommended turning off font smoothing on MacOS with retina display. I tried it (I guess I've had it on all this time) and,

I'm glad I made it to the part that recommended turning off font smoothing on MacOS with retina display. I tried it (I guess I've had it on all this time) and, indeed it looks better. (This is on a recent 27" iMac with Catalina.)