Looks like the quality of PetaPixel's journalism has improved. When I stopped reading their site, it was because they would merely post links to other sites/videos with little commentary and click baitey titles.
Now they're writing gems like
"Afterwards, the duo ran a simulation and calculated the efficacy with 500 rays, and the resulting average satisfaction for all examples was 99.9999999999%. Which, of course, is great news for gear reviewers on YouTube, as they will still be able to argue about the 0.0000000001% of sharpness difference among lens brands."
Also have a look at the algebraic formula in the article. Holy smokes.