Threads, like Twitter and Facebook, push posts algorythmicaly. Here on Nostr, you have to stare into the deep well known as "Global". Nothing is pushed, it's quite "live". Much different.
That said; do you feel that engagement on Threads is "true" and "real"? I am here on Nostr because eventhough I only get few interactions, I at least know that people actually read my stuff and wanted to interact - rather than being force-fed by an algo.