Reducing harmful prescription complexity

That Jake has wrote in his blog “You don’t need astigmatism correction for your differential (close-up) prescription.”, which we can find on the page Reducing Potential Harmful Prescription Complexity, what is the context? Is it for <= 1D of astigmatism or any degree of astigmatism?

Actually on the blog it’s clear he says you don’t need to correct for less than 1 diopter of cylinder in your differentials. But above that you do. I found I can only comfortably drop about 0.5d at the start though, so 1D is the Most you should consider dropping

That matches with the info in the email and some other pages on the site, however I was bit surprised to find that this page doesn’t specifically mention any numbers. Thanks for providing your input.