Very interesting report, and very ethical way to gather the data for study.
The part about how a small number of core users are important to the community is something we need to keep on our minds. But something bugging me is how Threadverse is absent from the report.
Threads does not interact with the Fediverse in its current form. It's a horn blasting into the fediverse at best. It's not participating in the fediverse, it's shouting into it. As such, it's correct to not report on how thredsizens participate in the fediverse - they do not, not at this time.