Thanks for the links, but regarding seobook.com/blog: it is quite strange to see a blog about SEO without HTTPS, which is a ranking signal since 2014 (1).
No idea why he doesn't have https enabled, but he probably knows it is disabled and explicitly wants it that way. He has covered plenty of technical SEO topics, but is more of a commentary on the industry now. I'd probably filter out the politics, but a good majority of the marketing/advertising content is spot on.
