Eh, I can certainly believe it. Remember that in addition to WordPress having an insanely large percentage of the CMS market/being used for many sites (30%), yo

Eh, I can certainly believe it. Remember that in addition to WordPress having an insanely large percentage of the CMS market/being used for many sites (30%), you've then got the next most popular ones also using PHP (Drupal and Joomla). Additionally, most forum scripts use PHP (so add phpBB, SMF, MyBB, vBulletin, IPB, XenForo, Woltlab, etc sites to the count), MediaWiki uses PHP (and most wikis run on it), most eCommerce solutions use PHP (Magento + OS Commerce, Open Cart and obvious WooCommerce), and a large percentage of bespoke sites do as well (especially older ones, or those from less experienced programmers/teams). Educational sites use Moodle too. It's just that these sites are less on the technical side than something like Google or Amazon or Netflix or what not, and likely require smaller programming teams working on them. It's entirely possible that most FANNG companies and Silicon Valley startups don't use PHP while most sites/visited sites in general do, hence the disparities.