Can’t help but think that nginx’s open core model is the reason nginx never got support for exporting Prometheus metrics on its own.

Bullseye.

Pff. Nginxs mods exporting metrics were written by the dozens before Prometheus was a thing.

Prom export is also inefficient as fuck. No one serious uses it.

Edit: I wrote two, one in 2009, another in 2013 in case you wonder.