Take the first paragraph, about how Google's homepage of just a textbox should really be a few hundred bytes instead of a megabyte. Google's homepage does a lot more than just enabling you to enter a search - there's the autosuggest feature, there's analytics, the apps tray, G+ integration with live updates, etc. Google's homepage looks basic but under the hood there's a lot going on. Which is the real crux of the matter - Google have designed something that doesn't get in the way of searching but is really a powerful portal to Google's suite of services because that's what gets them the data that makes them money. The fact they might be able to shave a milliseconds off the domContentLoaded time (which is only 394ms on my work PC) wouldn't make anyone happier but it would damage their bottom line because they'd know less about us.
If Jacques blog gets a significant amount more traffic by loading super fast then that's a definite, measurable success. If the only change is that it loads faster, and he doesn't grow his audience, then he hasn't really achieved anything.
There's a good lesson in this that's analogous to startups that spend huge amounts of time and money doing things that get them no additional customers. Optimising things that don't affect the metrics you use to measure how successful you're being is a waste of effort. Put your time in to things that actually matter.