The strength of PHP is the fact that you can get php hosting for almost no money, that takes no effort to setup, is shared but isolated, and is almost always portable

A programmers response is “I can throw Django in a container” or “I can just buy a digital ocean droplet”, and that’s true for a Developer, but it’s like putting Linux on your grandma’s laptop - you can maintain it, but the target audience can’t

The reason people build sites in PHP is that the people for whom they’re building the sites can trivially support it. Forever.