It's not, unless "static site generator" is one of those terms (like "literally" or "REST"[0]) that has morphed to mean the opposite of what it was supposed to mean. (Not to be confused with "serverless", which never meant what the word suggests.)
This application is generating HTML on the server, but so does PHP. A Web site backed by a PHP application is the antithesis of a static site.
This application is generating HTML on the server, but so does PHP. A Web site backed by a PHP application is the antithesis of a static site.
0. https://news.ycombinator.com/item?id=23672561