I used to be of this opinion but enough ISPs and other intermediaries will happily MITM http (and DNS) if they can to inject ads or redirects to affiliates.
With modern hardware and letsencrypt, getting SSL going is about close to free and less effort than what most "just text" sites do for their content.
but still my only submission is that if SSL is one of criteria;s in all Due dils, then how it would be difficult to add one PG;s site? or why to make such a big fuss around it?