In the Elixir library, we don't even have metrics. I went into the OTel rabbit hole for two days trying to understand how is it better to Prometheus, just to learn it doesn't even do the basic thing, just traces.

I've mentally decided to just go Prometheus and ignore OpenTelemetry for the foreseeable future.

It's one of those things big players are hyping to preemptively lock you in their solution, but it's actually just alpha-quality new tech and "boring" "old" tech like Prometheus or statsd are simply more functional and better supported in the wild.