I like it because I use it for MELT in general. Prometheus generally does metrics and if you want to include logs, traces and events, it becomes more cumbersome. With the Otel collector, I can just update my collector configuration to point to the various services.

I’m not saying OP can’t use what you suggested, just stating what I would use.

I would use OpenTelemetry, Prometheus, and Grafana…

However, subscribing is aiding in their funding, and that could help get them there quicker.