chris, Consider this: If a large number of Mastodon/Fediverse instances block Threads.net not out of ideological 'purity’ (never a good test anyway) but rather out of true and obvious poor moderation, spam, sources of harassment, etc. Perhaps Threads joining the Fediverse will improve Threads through force of de-Federation?
There have been plenty of keystrokes committed to how powerful Threads is... but don't discount our power.