> I highly recommend narrowing your window; as a general rule it will dramatically improve web typography.

That will have the side effect of knocking most sites into "responsive" mode, giving you less of a desktop experience than you believe you're getting.

My monitor is 1920x1080, a fairly standard desktop monitor resolution. Narrowing it back to 1024x768 or something will give you a poorer experience on most modern websites.

I do believe this "typographical style" is more relevant for printed material with smaller font sizes.