Out of curiousity, I like security just as much as the next guy and ensure that certs are valid, ciphers are fresh, and protocols are mature, but I am also not really concerned with an informational site that runs http being browsed. Would you mind sharing what your concern would be with browsing this content over http?
If you'd like to dig more into the history, let's encrypt did so much to enable the movement to https by making certs free, and chrome with the red text and warnings in the url bar, which has since graduated to a full on page that requires clicking to still go despite the warnings