I have a lot of Linux sysadmin experience but haven't touched Apache in more than a decade. I thought it's mostly nginx or other solutions at this point.
Apache has plenty of life left, it just works™, supports almost everything, and currently is about as efficient as nginx WRT connection handling. Sometimes you want what .htacces gives you. (No built-in Lua though.)
Apache has mod_md -- an acme client, which lets you obtain https certificates as easily as on caddy, without integrating with awkward separate programs.
At work we use Apache because of mod_shib. We have yet to try nginx-http-shibboleth.
Why would I not use apache if everything already works with it for me?
Default Wordpress docker image uses it.
At least 21% of web sites use Apache httpd, and of course many sites don’t report the software used at all. Nginx is also frequently used as a reverse proxy, with Apache used behind it.