We use OpenTelemetry extensively at Torq. In fact we are tracing 100% of our traffic. We started building the product with the idea in mind that we dislike logs and want to use them as little as possible. Since then we have grown to 30 engineers and everyone is in love with OpenTelemetry. We use it during development and to debug issues in production. We have automations built around it, special middleware we developed for our internal libraries to report traces (orm, pubsub etc)