Reach every community
Technical audiences fragmented across networks, and no single one of them is where everyone is. Posting to only one means writing off part of your community.
Tuned per network
Mastodon and Bluesky reward a different register than LinkedIn. Per-network variants let one post read naturally on each without maintaining separate drafts.
Measure where it worked
Engagement is stored per network, so it is obvious which communities respond to which kind of post rather than which network is loudest overall.