* Even on static sites, HTTPS prevents a MITM from telling what pages you're reading, or introducing falsehoods into the content. It's not "overuse" to use HTTPS there.
* I don't know how the author's server is set up, but a 1-second increase in page load time isn't consistent with load times I've ever measured anywhere else. In fact, there's a lot of HTTPS pages where the total load time is less than what's claimed as the difference here.
* If you care about sustainable technology, you should be demanding that Apple provide updates for hardware longer, or open-source everything so that the community can. Whether or not the sites you want to visit use HTTPS, using the Internet from a system years behind on security patches is a really bad idea, and not something you should optimize for.
* The specific suggestion of disabling the redirect is exactly equivalent to a MITM attacker running sslstrip, so you're doing a big piece of the bad guy's job for him.