and to make sure i'm following - these are SpiceDB variables and need the prefix:

--otel-endpoint string           OpenTelemetry collector endpoint - the endpoint can also be set by using enviroment variables
      --otel-provider string           OpenTelemetry provider for tracing ("none", "jaeger, otlphttp", "otlpgrpc") (default "none")
      --otel-service-name string       service name for trace data (default "spicedb")
      --otel-trace-propagator string   OpenTelemetry trace propagation format ("b3", "w3c", "ottrace"). Add multiple propagators separated by comma. (default "w3c")

where the other OTEL configuration env vars do not use the prefix?