Most people storing time-series are also doing that outside of TimescaleDB.
So the relevant question isn't what a typical PostgreSQL user is doing, but whether someone wanting to optimize their storage should look at a PostgreSQL extension, or an upstart database like TimescaleDB.
That's a fair question.
We find that most developers storing time-series data on Postgres are doing so without pg_partman. So we first wanted to provide a benchmark that would be useful to most developers.
This benchmark was also the result of months of dedicated work. So the team did spend a lot of time on this. Unfortunately, they ran out of time to cover pg_partman. But that comparison is on our list of things to do soon.
Thanks!