Not the OTEL "telemetry" but sensors sending measurements from the field "telemetry". IT tech is, as usual, stealing perfectly defined engineering words and making them something else.

TimescaleDB is perfect if you also have relational data that you need to join with field data to the point that there no pros of using anything else for this use case, say you have 100000+ sensors and you need to group them by the customer site relations while aggregating per day statistics.