For example, Grafana has an opt-out usage tracking in the open-source version: <https://grafana.com/docs/grafana/latest/setup-grafana/configure-grafana/#reporti

For example, Grafana has an opt-out usage tracking in the open-source version: <https://grafana.com/docs/grafana/latest/setup-grafana/configure-grafana/#reporting_enabled https://grafana.com/docs/grafana/latest/setup-grafana/config...>, so it seems to be somehow acceptable in general in the industry.