You can add a controversy to the new controversy presented in the article, because even that conditional speed improvement only happens if you ignore the rest

You can add a controversy to the new controversy presented in the article, because even that conditional speed improvement only happens if you ignore the rest of the environment. Meaning, it will be significant if the user is arriving from google search and only focused on browsing. If the user has GPS consuming 3G data, or some other app they care about, and only did a quick google search to confirm something, now the GPS or other app data will be severely limited while the browser download all that crap about some 20 different sites the user will never ever visit. I personally disable preloading on everything, because waiting 3s for a page to show up is a very fine tradeoff to control what my device is downloading and when.