Apache’s httpd still comes to this day preconfigured to use the awful prefork config or of the box on Ubuntu, CentOS, debían etc. A lot of people literally don’t even know that there’s another option but they do know that nginx is far better than prefork.

That asside, there’s also still pros and cons for both nginx and mpm_event. So to simply say “why use nginx apache also has event driven server configs now” is pretty naive because it’s not like one is just inherently better than the other at everything.